Question

Which of the following is the equivalent to the expression below?

Answer 1

Answer:

D: -5x^2+4x-4

Step-by-step explanation:

$x^2+x-4-3x(2x-1)\\=x^2+x-4-6x^2+3x\\=-5x^2+4x-4$

For simplicity you only check the terms with different coefficient: coefficient of x:

+1+(-3)(-1)=+4

Ans: D