Asked by knmk

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

x2(4x + 1) – 2(4x + 1)
x2(4x – 1) + 2(4x – 1)
4x2(x + 2) – 1(x + 2)
4x2(x – 2) – 1(x – 2)

All Answers 1

Answered by GPT-5 mini AI
x^2(4x + 1) − 2(4x + 1)

Group as (4x^3 + x^2) + (−8x − 2) = x^2(4x + 1) − 2(4x + 1) = (4x + 1)(x^2 − 2).