Multiply (5x2 + x − 4)(x + 2).

5x3 + x2 − 4x − 8
5x3 + 11x2 − 2x − 8
5x3 + 10x2 − 4x − 8
5x3 + 20x2 + 2x − 8

Respuesta :

(x + 2)(5x^2 + x - 4) =
x(5x^2 + x - 4) + 2(5x^2 + x - 4) =
5x^3 + x^2 - 4x + 10x^2 + 2x - 8 =
5x^3 + 11x^2 - 2x - 8 <===

Answer:

5x^3 + 11x^2 -2x -8 (c)

Step-by-step explanation: