Question

Find the product of x^2+2x-4 and 3x.

a. 3x^3+6x^2+12x

b. 3x^3+6x^2-12x

c. 3x^3+2x-4

d. -3x^3

Answer 1

`3x({x}^(2) + 2x - 4)`

`3x * {x}^(2) = {3x}^(3)`

`3x * 2x = 6 {x}^(2)`

`3x * - 4 = - 12x`

`b. \: 3 {x}^(3) + 6 {x}^(2) - 12x`