Question

Find the product of (8x - 7) and (-3x3 + 7x - 1)

A) -24x4 + 77x3 – 49x2 – 8x + 7
B-24x4 +21x3 + 56x2_57x + 7
C-24x3 + 77x2 - 57x + 7
D) -24x4 + 7773-57x2 + 7x

Answer 1

B 24x4 +21x3 + 56x2_57x + 7

Explanation:

Answer 2

B is the correct answer.

Explanation:

`(8x - 7)(-3x^3 + 7x - 1)\\=-24x^4 + 56x^2 - 8x + 21x^3 - 49x + 7\\= -24x^4 + 21x^3 + 56x^2 -57x + 7`

This matches answer B.