Respuesta :

Answer - 14x+6x

Step-by-step explanation:

2 *-7x+2*3x^2+2*4 (expand distributing terms)

-14x+2*3x^2+2*4 (simplify 2x-7x to -14x)

-14x+6x^2+2*4 (simplify 2*3x to 6x^2)

-14x+6x2+8 (simplify 2*4 to 8)