Question

What is the product? (x^4)(3x^3-2)(4x^2)(4x^2+5x)

(A 12x^9+15x^8-8x^6-10x^5
(B 12x^24+15x^12-8x^8-10x^4 (C 12x^9-10x^5
(D 12x^24-10x^4

Answer 1

A)

Explanation:

1000% sure. Use foil method and add exponents together... Also on edge.

Answer 2

Definitely A

Explanation:

When multiplying you add exponents.

`x^(4) (3x^(2) -2) = 3x^(7) -2x^(4) \\FOIL (3x^(7) -2x^(4))(4x^(2) +5x) = 12x^(9) +15x^(8) -8x^(6) -10x^(5)`