Question

Which of the following is a solution to the equation

x² + 5x + 4 = 2x² - 10?
A) -7
B) -2
C) 0
D) 2

Answer 1

x=−2

Explanation:

x2+5x+4−(2x2−10)=2x2−10−(2x2−10)

−x2+5x+14=0

(−x−2)(x−7)=0

−x−2=0

Hence B is the correct option