Question

Which shows one way to determine the factors of 4x3 + x2 - 8x - 2 by grouping?

Answer 1

(4x+1)(x²-2)

Explanation:

one way to determine the factors of 4x^3 + x^2 - 8x - 2 by grouping:

x²(4x+1)-2(4x+1)

(4x+1)(x²-2)

Answer 2

(x^2-2)(4x+1)

Explanation:

4x^3 + x^2 - 8x - 2

Group:

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

Factor out as much as possible: (The GCF)

x^2(4x+1)-2(4x+1)

Regroup:

(x^2-2)(4x+1)