Question

Which expression is equivalent to the given expression?
3x^2 + 5x – 7(x^2 + 4)
A. x^2+28
B. x^2+4
C. -4x^2+5x -4
D. -4x^2+5x-28

Answer 1

Answer:

$-4x^2+5x-28$

Step-by-step explanation:

Distribute -7 by multiplying it by ($x^2$) and (4)

$3x^2+5x-(7)(x^2)(7)(4)$

$3x^2+5x-(7x^2+28)$

Now combine like terms

$(3x^2-7x^2)+5x-28$

$-4x^2+5x-28$