Question

Simplify (ab)2 + (b3 - a2) if a = -2 and b = 4

Answer 1

Explanation:

(-2*4)2+(4×3--2×2)

(-8)2+(12--4)

-16+16

=0

hope this helps

Answer 2

124

Explanation:

(ab)^2 + (b^3 - a^2)

Let a = -2 and b = 4

(-2 *4)^2 + (4^3 - (-2)^2)

Parentheses first

(-8)^2 + (4^3 - (-2)^2)

Then the exponents in the parentheses

(-8)^2 + (64 - 4)

Subtract in the parentheses

(-8)^2 + (60)

Exponents

64 + 60

124