Question

How do you multiply `4x^2(3x^2 + 2x – 1)`?

Answer 1

`12x^4+8x^3-4x^2`

Explanation:

Multiply the term, `4x^2`, by every term in the trinomial, `3x^2+2x-1`:

`4x^2(3x^2+2x-1)`
`=4x^2(3x^2)+4x^2(2x)-4x^2(1)`
`=12x^4+8x^3-4x^2`