Question

Simplify the polynomial expression given below. (2x-1)(2x^2+5x+3)

Answer 1

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

Expand:

(2x - 1)(2x^2 + 5x + 3) =

(2x^2 * 2x + 5x * 2x + 3 * 2x) + (2x^2 * -1 + 5x * -1 + 3 * -1) =

4x^3 + 10x^2 + 6x - 2x^2 - 5x - 3 =

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