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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

1. Zero and Negative Exponents

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Exercise 5 Page 421

Substitute 2 for a and -4 for b.

-2

Practice makes perfect

To evaluate the given expression for a = 2 and b = -4, we should substitute these values into the expression and simplify as much as possible.

a^3b^(-1)

a= 2, b= -4

2^3( - 4)^(-1)

Calculate power

8(- 4)^(-1)

NegExponentToFrac

a^(- m)=1/a^m

8* 1/(-4)^1

a^1=a

8(1/-4)

MoveNegDenomToFrac

Put minus sign in front of fraction

8(-1/4)

a(- b)=- a * b

-8(1/4)

MoveLeftFacToNumOne

a* 1/b= a/b

-8/4

Calculate quotient

-2

Subchapter links

Lesson Check p.421

Practice and Problem-Solving Exercises p.421-423

Standardized Test Prep p.423

Mixed Review p.423