Question

Question 1 of 10

Solve this quadratic equation by completing the square.
x² +8x= 10
OA. x=-4±√10
B. x=-8+√10
OC. x=-8± √26
D. x=-4± √26
SUBMIT

Answer 1

x² + 8x = 10

x² + 8x + 16 = 26

(x + 4)² = 26

x + 4 = ±√26

x = -4 ± √26

The correct answer is D.