Simplify the expression 3 (x + 2) (x2 - x - 8).

3x^3+3x^2-30x - 48

Step-by-step explanation:

we apply distributive property

3 (x + 2) (x^2 - x - 8)

so we have:

(3*x+3*2) (x^2 - x - 8)

(3x+6) (x^2 - x - 8)

3x*x^2 - 3x*x - 3x*8 + 6*x^2 - 6*x - 6*8

3x^3-3x^2-24x + 6x^2 - 6x - 48

3x^3+3x^2-30x - 48