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onalExponents(Chapter7)Name:Teacher:Period:1

Unit 4 Radical Expressions and Rational Exponents (chapter 7)Learning Targets:Properties ofExponentsSimplifying RadicalExpressionsMultiplying andDividingMajor OperationsRational ExponentsSolving RadicalEquationsGraphing Radicals1. I can use properties of exponents to simplify expressions.2. I can simplify radical algebraic expressions.3. I can multiply radical expressions.4. I can divide radical expressions (and rationalize a denominator).5. I can add and subtract radical expressions.6. I can multiply and rationalize binomial radical expressions.7. I can convert from rational exponents to radical expressions (and vice versa).8. I can simplify numbers with rational exponents.9. I can solve equations with roots.10. I can solve equations with rational exponents.11. I can graph radical expressions & identify domain and range of radical n17- ‐027- ‐13,47- ‐25,67- ‐37,87- ‐49,107- ‐5117- ‐82

dpractice,Iwillbeableto use properties of exponents to simplify expressions.(LT1)- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- )A)( 3) 52 35 B) 3 3 3 56 C) 4 5 2 14 Example2:Simplify 2 3 3

sinyoursolution. 3 r 2 B) 4 c A)w5 w 8 w616m5 n 4C)2n 6(xD)43y 3 )x3 y ponentsinyoursolution. 52 2w 3 B) 4 m 2A)( 4x )( 2x )(12m n )C)2 68m4 n725 2(3x )D)y32 x 4 y 7FINALCHECK:(calcallowed)LT 1. I can use properties of exponents to simplify veexponentsinyoursolution.(x y )4a.( 5x )(2x y )( 6x y )6 4 34b.( 3x 5 y) 2c. 3x0 y244

PracticeAssignment(LT1) LT1. I can use properties of exponents to simplify expressions.oBOOK7.0page368LT 1 MORE PRACTICE #1 (Yay!!!!) 26)xy 5 7)(xy)- ‐53)(- ‐4x)- ‐3 8)2x1)92)4x 3 4 2 9)(2x)- ‐45)10 2 10)2 21)1814) 1497)4) 73)164 x36)xy515 5x y 3 28)2x49)116x42)10)4x35)110013365

LT 1 More Practice xponents&somedon’t!a)5x- ‐1d)- ‐2x3g)5y3x- ‐2i)(5b3)- ‐21)2x- ‐5b)2- ‐52)2- ‐3c)(- ‐2)33)- ‐2x44)(- ‐2)4 e)(- ‐2)- ‐35)(- ‐2)- ‐4 f)5x2y- ‐3 6)7a5b- ‐10 7)- ‐10a2b- ‐3c- ‐4h)52ab- ‐38)(a5b2)- ‐39)(4x5)- ‐2j)(- ‐2a2b4)310)(- ‐5x4)- ‐3l)(7a)2b- ‐3m)4x- ‐2yz- ‐1n)k)(5x)- ‐2y38x 6y 10z 35 24520x y zLT 1 MorePractice#311)(- ‐2)2(- ‐2)312)[- ‐32]313)(32x2y)214)5 515)(2- ‐3)216)m7 5 18) 4 19) 3x2y0z 4 5 317)83 858931m46

5x 4 y3 3x 3y520) 8x 56y421)23)2x 6y46x 3 4x 2 y312y522)x 7 y 3 z 2 1 4xy z 5x 3 yz15y 10z0 2 x 9 y 2 z 4 a 7 b 3 c 24) 0 10 2 4 3 5a bc x y z 7

lessonandpractice,Iwillbeableto simplify radical algebraic expressions.(LT2)- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- anumberorexpression(i.e.16 42).a.4!49b.10!xc.6 8!144x ySince52 25,5isasquarerootof25.Since54 ,5isarootof.Since53 ,5isarootof.Since55 lfourthroot(s)of- ‐16?.Whataretherealcuberoot(s)of- rootsof- ‐1000and!27B)Thefourthrootsof1,- ‐0.0001,and16!6258

otoftheradicand.Example2:Findeachreal- ‐numberroot.A)3 8B) 100C)4 tivenumbera,!n an ?!A)4x 6B) 3 a 3b6C)4 x 4 y 8D)4x 2 y 4E) 3 27c6F)4 x 8 y12G)3 40x 8 y12H) 4 112ac 6I)4 tonwillholdthree- ulaw ces.Cartonscanonlybeorderedinwhole- inerthegrowershouldorder?FINALCHECK:I can simplify radical algebraic expressions. ennecessary.a.144a6b20b.3 125x 12 y 6c.464x18 y129

LT 2 PracticeAssignment I can simplify radical algebraic expressions.(LT2).o Worksheet(Practice7.1)(below)Practice7- ‐1RootsandRadicalExpressionsFindeachreal- ‐numberroot.1.5.41442. 253.0.00816.37.273 0.014. 9.21610. 34311. r.13.40014. chnumber.17. on.Useabsolutevaluesymbolswhenneeded.21.25.581x 422.121y10243x5 y1526.3 ( x 9)323.27.38g 624.3125x925( x 2)428.364 x9343Findthetworeal- ‐numbersolutionsofeachequation.29.x2 430.x4 8131.x2 0.1632.x2 164933.AcubehasvolumeV tcanbefoundusingtheformulav2 tyoftheobjectaftera10- bjectfalls20feetratherthan10feet?10

LT2MorePractice#1:7.1BookPage37211

uebarswhenneeded.1)45 2) 125 3)20 5)3 27 4)5 64 56)3 81 7) 4 16 8)4 32 539)16x16 10)8x 9 ,wemust“ ”.11)x 5 12)3x 8 3 313)9x 20 14)3 24x13 y6 15)4 11 3 8a b c 16)2xy 32x 6y2z 9 12

n:Afterthislessonandpractice,Iwillbeableto multiply radical expressions.(LT3) divide radical expressions (and rationalize a denominator).(LT4)- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- mplifiedexpression).A)5! 50xB)38! rty1:MultiplyingRadicalExpressions–If!n aand!n b arerealnumbers,then!n a n b ablesarepositive.A)! 2 8B)!3 5 3 25C)3 25xy 8 3 5x 4 y variablesarepositive.A)3 27B)!3 3 3 9C)3 54x 2 y 3 3 5x 3 y 4!13

adicalExpressions–If!n aand!n b arerealnumbersand!b 0 ,thennan! b lesarepositive.3 8133192x Assumeallvariablesarepositive.4243162x 533x 21024x 15A)B)44x! youmightobtainasolutionin2theformx 3 sumeallvariablesarepositive.3A)5!x3B)5xy!2C)3! 3x14

.Assumeallvariablesarepositive.A)2x 310xy3B)34! 6x3C)34525x2FINALCHECK:LT3- ‐4I can multiply radical expressions. (LT3)I can divide radical expressions (and rationalize a denominator) rwork.a.c.490a5bb.d.3 35a5 14a269a539a2PracticeAssignmentLT3,4 Icanmultiplyradicalexpressions.(LT3)o BOOK7.2page377- ‐378#2- ‐8even,18- ‐22even Icandivide radical expressions (and rationalize a denominator)(LT4)o BOOK7.2page377- ‐378#24- ‐34evenPracticeboth:BOOK7.2page377#38- ‐54even15

LT3,4BookPage37716

LT3,4MorePractice#1:Worksheet7.2Practice7- 4 64.4 2 x 3 8 x32.9 x 2 9 y 53.50 x 2 z 5 3 15 y3 z5.xy 4 xy6.9 2 3 ssumethatallvariablesarepositive.13.16.34 2514.81 3615. 3 3 917.3x 6 x318.Simplify.Assumethatallvariablesarepositive.3 2732 xy 2 3 4 x 2 y 736x320.3 125y 2 z 421. 18k 619.22.3 16a1223.x 2 y10 z24.4 256s 7t1225.3216x 4 y326.75r 327.4 625u .328.31.4x 26x29. 3x3x(2 x) 2(5 y ) 432.318 y 23 12 y30.33.4243k 33k 7162a6a 3434.ThevolumeofasphereofradiusrisV π r 3 ofaspherewithvolume100in3.17

LT3,4MorePractice#2:Simplify.(Multiply)2)23 5 4 73)74) 2 11 7 35)2 4 3 5 4 36)3 2 58)5 3 9 6 3 39)11)2 3 51)2 3 5 7()()5 10 2()()27)4 5( )33210)(8x 7 y)()6x 5 y 3 )2 6 117)17 1219)20)3318)8 30 2 515)3 18643 353223251021)4822)5m410m323)3 4 2a246a318

fterthislessonandpractice,Iwillbeableto addandsubtractradicalexpressions.(LT5) LT6)- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- me.LIKERADICALSORNOT?!A)!6 3 11 ,2 3 11B)!6 3 11 ,2 11C)!5 7 ,3 7D)!5 7 ,3 2Example1:Addorsubtract,ifpossible.A)!5 3 x 3 3 xB)!4 2 4 :Simplify!6 18 4 8 3 72 .A)6 3 5 3B)!2 3 8 32C)!3 24 5 3 3D)! 50 75 98 2719

Multiplyandsimplify.()()()2A)3 2 5 2 4 5B)2 adicalconjugates.()()Example5:Multiplyandsimplify 3 7 3 thedenominatorofeachexpression.3 56 15A)B)1 54 ominatorsifnecessary.()(()()A)2 7 1 3 7)C)4 2 3 4 2 3B)!3 54 3 162 3D)4 3!20

FINALCHECK:LT5- ‐6I can add and subtract radical expressions. (LT 5)I can multiply and rationalize binomial radical expressions. (LT .Showyourwork.a.c. 3 125 40 6 20()27 2b.d.(1 7 6 )(5 2 6 )4 53 5LT5,6PracticeAssignment Icanaddandsubtractradicalexpressions.(LT5) ns.(LT6)o WorksheetPractice7.3(below)Practice7- njugates.1.(3)()2 9 3 2 92.(1 7 )(1 7 )3.(5)()3 2 5 3 2Addorsubtractifpossible.4.9 3 2 35.5 2 2 36.3 7 7 3 x7.14 3 xy 33 2 3 49.52 310.1 51 511.2 125 12Simplify.12.3 32 2 5013.200 7214.3 81 33 315.2 4 48 3 4 24321

Multiply.()(())(16.1 5 2 5)()17.1 4 10 2 10219.4 2 320.(2)()((2 7)18.1 3 7 4 3 7)221.2 3 3 variablesarepositive22.28 4 63 2 723.6 40 2 90 3 16024.3 12 7 75 5425.4 3 81 2 3 72 3 3 2426.3 225 x 5 144 x27.6 45 y 2 4 20 y 2()()28.3 y 5 2 y 5 53 105 230.29.31.(x 32 147 2)()x 332.2 3 2

LT5,6MorePractice#1:Book7- ‐3Page38223

)6 34)2 5 39)a 3 5 3 3 2 3 4 3)25)4 3 5 13 7 56)a ab3 7ab ab8)d2 16d5 8 d13443 8 32b5 a 25a b2 49b 50 10)2)5 3 440 5 907)3 2475 98 27Simplify.(Multiplying)11)3 2 6 5()12)3 214)16)()8 2 3 5 1213)()26 5 2(34 3)(2 33 4 3)2Simplify(Rationalize)15)3 5 72 71 51 2 524

RationalExponents eto ndviceversa).(LT7) simplifynumberswithrationalexponents.(LT8)- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- mPBRBPOR R BP !125 3B)!5 2 5 2C)!10 3 25 2!25 arealnumberandmisaninteger,then:1m!a n !a n- ‐Thedenominatorbecomestheoftheradical.- d.25

onsinradicalform.3 1.5a.b.c.!x 4! nentialform.a.( )5!x9b.4! 3r!a 14( ioninradicalform,andviceversa.4A)!(5x) 3B)!w 0.4C)!3 c 4D)( Simplifyeachnumbercompletely. 53A)!( 32) 5B)!36 sare.(Example6:Write 27x 6!)23insimplifiedexponentialform.26

Writeanswersinsimplifiedexponentialform.(A) 8x 15!) 13 h6 p9 B) 3 1000m ! 23 3! 32a 5 5c)# 10 20 &"b c storadicalexpressions(andviceversa).51.Writex 7inradicalform.2.Write10 ionalexponents. 33.Evaluatewithoutacalculator:64 wer.Showyourwork.a.(81a1 80 32 0 4b c ) 2b." a12c 18 % 6 ''# b&3LT7,8PracticeAssignment ns(andviceversa).(LT7) Icansimplifynumberswithrationalexponents.(LT8)o WorksheetPractice7.4(nextpage)27

Practice7- thatallvariablesarepositive.14.(2564 ) 4112. 814 13. 32 5 5.706.8 3227.( 1) 518.( 27) 3115411.27 39.16 41110.x 2 x 312.(82 ) 311.2y 2 y113.3.6016.8 27 315. 8 12117. 3 x 2 4 x 3 018.3822.y y1 6220. y 3 2 121. a 3 b 2 x 7423. 2 x 3 124. 2a 4 32126. 2 x 5 6 x 4 125.81 212 y 34y2 921 119. 3a 2 b 3 252 1 414. 16 27.9x 4 y 2(12)Writeeachexpressioninradicalform.1429.x 330.(2 y ) 3131.a1.5232.b 533.z 335.m2.436.t 72134.(ab) 437.a 1.6 Writeeachexpressioninexponentialform.ANSWERS:x 339.3 m40. 5y38.41.32y 242.3( 4 b )43. 644.5(6a)445.n 446. 4 (5ab)328

LT7,8MorePractice#1:Book7.4page38829

a n118)a 4220)a 3 x 6 117)a 2 m19)a n sitive.22)324)7 x 21y49 Simplify.Useabsolutevaluebarswhenneeded.62326)( 27 x ) 49 23)4 x12 25)x 4 y8z14 122327)( 64 y ) 128)(8x115 3)! 27b 9 329)# 6 &" 8a % 1! 16c8 430)#16 &" 81d %30

andpractice,Iwillbeableto solveequationswithroots(orradicals).(LT9) solveequationswithrationalexponents.(LT10)- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐- ‐WarmUp:Solvebyfactoring.!x 2 5x onent).RADICALEQUATIONORNOT?!A)! x 3 12B)! 3 2x 10C)!x 2 6

Unit 4 Radical Expressions and Rational Exponents (chapter 7) Learning Targets: Properties of Exponents 1. I can use properties of exponents to simplify expressions. Simplifying Radical Expressions 2. I can simplify radical algebraic expressions. Multiplying and Dividing 3. I can multiply radical expressions. 4.

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