Pearson Algebra 1 Common Core, 2011
PA
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)
2^3( - 4)^(-1)
8(- 4)^(-1)
8* 1/(-4)^1
8(1/-4)
8(-1/4)
-8(1/4)
-8/4
-2