Question

-7x=x² + 12

A)
x = 3, x = 5
B)
x = 3.x = 4.17
X = -3, x = 5
D)
x = -4X=-3

Answer 1

D. x = −3, −4

Explanation:

1) Move all terms to one side.

7x+ + 12=0

2) Factor 7x +
`x^(2)` + 12.

(x + 3)(x + 4) = 0

3) Solve for x.

x = −3, −4