Question

1). -8x^2

2). 6x

3). -40x^2

4). -2x

Answer 1

6x

Explanation:

I guess it is but i don't know exact answer

Answer 2

-8x^2

Explanation:

This works like multiplying numbers "by hand." The partial product in the bottom row comes from two multiplications: (-4x)(-1) = +4x, shown in red in the attached image. The second multiplication is (-4x)(2x) = -8x, shown in blue.