Respuesta :

Answer:

-3x

Step-by-step explanation:

-3x( 7x2 - x +4)

When we distribute, the term on the outside of the parentheses is distributed ( multiplied) to the terms on the inside of the parentheses

-3x* 7x^2 -3x*-x -3x+4

-21x^3 +3x^2 -12x