Question

Choose the correct simplification of 8x2(4x + 2x2 − 1).

Answer 1

If your on flvs or just taking a test and these are ur options...

A. 32x^4 − 16x^3 + 8x^2

B. 32x^4 + 16x^3 − 8x^2

C. 16x^4 − 10x^3 + 8x^2

D. 16x^4 + 32x^3 − 8x^2

THE ANSWER IS D

Answer 2

`8 x^(2) (4x + 2 x^(2) - 1) = 16 x^(4) + 32 x^(3) - 8 x^(2)`

is one of many possible simplifications. I don't see any to choose from...