Question

Find the volume of a rectangle box given the length of x, width of (x-2) and height of (3x+5)

Answer 1

They answer is 3*x+5

Answer 2

3x^3 − x^2 − 10x

Explanation:

V= l*w*h

V= x * (x-2) * (3x+5)

V= (x(x−2)) (3x+5)

= (x(x−2)) (3x) + (x(x−2)) (5)

= 3x^3 − 6x^2 + 5x^2 − 10x

=3x^3 − x^2 − 10x