Which expression is equal to (x+4) (-3x2-4x+2) ? - 3x3-4x2+2x+8 - 3x2-4x+8 - 3x3-16x2-14x+8 - 3x2-3x+6

The first expression

-3x3-16x2-14x+8

Step-by-step explanation:

first times the first x in parentheses by everything in the second

(x) (-3x^2) and (x) (-4x) and (x) (2)

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

Then times the 4 by the other variables in the parentheses

(4) (-3x^2) and (4) (-4x) and (4) (2)

-12x^2-16x+8

now the whole equation:

-3x^3-4x^2+2x - 12x^2-16x+8

now you must simplify or add like terms

-3x^3-16x^2-14x+8 is your answer, which is the first one.