7.0 Exponent Law Reviewkillornmath.weebly.com/uploads/3/0/9/5/30958945/7.0_-_exponent_laws.pdf4....

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7.0 Exponent Laws (Solutions).notebook October 13, 2015 Chapter 7 Exponential Functions 7.0 Exponent Law Review

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Page 1: 7.0 Exponent Law Reviewkillornmath.weebly.com/uploads/3/0/9/5/30958945/7.0_-_exponent_laws.pdf4. Fractional Exponents xm/n = ( √x ) ex: 82/3 = ( ∛8 )2 = 22 = 4 n m 5. Zero Principle

7.0 ­ Exponent Laws (Solutions).notebook October 13, 2015

Chapter 7 ­ Exponential Functions

7.0 ­ Exponent Law Review

Page 2: 7.0 Exponent Law Reviewkillornmath.weebly.com/uploads/3/0/9/5/30958945/7.0_-_exponent_laws.pdf4. Fractional Exponents xm/n = ( √x ) ex: 82/3 = ( ∛8 )2 = 22 = 4 n m 5. Zero Principle

7.0 ­ Exponent Laws (Solutions).notebook October 13, 2015

What does an exponent represent?

An exponent represents the number of times that a base is to be multiplied by itself.

Example:   x3  =  x  x  x

Special exponentsPerfect Squares

Perfect Cubes

Perfect  4ths

14  = 1

24  = 16

34  =   81

44 = 256

12  = 1 72 = 49

22  = 4 82 = 64

32  =   9 92 = 81

42 = 16 102 = 100

52 = 25 112 = 121

62 = 36 122 = 144

13  = 1

23  = 8

33  =   27

43 = 64

53 = 125

63 = 216

Page 3: 7.0 Exponent Law Reviewkillornmath.weebly.com/uploads/3/0/9/5/30958945/7.0_-_exponent_laws.pdf4. Fractional Exponents xm/n = ( √x ) ex: 82/3 = ( ∛8 )2 = 22 = 4 n m 5. Zero Principle

7.0 ­ Exponent Laws (Solutions).notebook October 13, 2015

Write the number as a power of another number. The first one is done for you. If you know of more than 1 answer, write them all.

36  =   62 64  =  26, 43, 82

1000  =  103 125   =   53

81  =  34, 92  16  =  24,  42

1. Law of Multiplication

xm · xn  =  xm+n ex:   x5 · x3  =  x8

2. Law of Division

xm ÷ xn  =  xm­n ex:   x11 ÷ x7  = x4

Page 4: 7.0 Exponent Law Reviewkillornmath.weebly.com/uploads/3/0/9/5/30958945/7.0_-_exponent_laws.pdf4. Fractional Exponents xm/n = ( √x ) ex: 82/3 = ( ∛8 )2 = 22 = 4 n m 5. Zero Principle

7.0 ­ Exponent Laws (Solutions).notebook October 13, 2015

3. Power Law

(xm)n  =  xmn ex:  (x6)3  =  x18

4. Fractional Exponents

xm/n   =  ( √x ) ex:   82/3   =  ( ∛8 )2  = 22 = 4n m

5. Zero Principle

xm ÷ xm   =   xm­m   =   x0   =   1 ex:  y0  =  1          110  = 1 

6. Negative Exponents

x­m   =   1 ex:  y­3  =   1 p­7   =   1                   xm    y3         p7

Page 5: 7.0 Exponent Law Reviewkillornmath.weebly.com/uploads/3/0/9/5/30958945/7.0_-_exponent_laws.pdf4. Fractional Exponents xm/n = ( √x ) ex: 82/3 = ( ∛8 )2 = 22 = 4 n m 5. Zero Principle

7.0 ­ Exponent Laws (Solutions).notebook October 13, 2015

Classfun ­ simplify each of the following:

1. p4  x  p7  2. W10 x W3 x W­8 3. C8 C3

4. (a3)6  5. (g h)4    6. (g3 h2)5  

7. m6 3   8. 50   9. d5  x  d­1  x  d0 n5

10. 3­3

11. (1/2)­2  12. (((√3 )6)0)­4  13.  (81)1/2

14. (27)1/3  15. (49)­1/2   16. (27)4/3 

17. 16­3/4   18. 4­0.5   19.  (51/3)­6 

20. (91/2 + 161/2)2

Homework

Exponent Law Worksheet