Question

The first three steps of completing the square to solve the quadratic equation x2+8x+5=0

Answer 1

Answer: x = 2 or x = -10

Explanation:

x² + 8x + 5 = 0

x² + 8x + 4² - 4² + 5 = 0 <<<===== First Step: Add + 4² - 4²

(x + 4)² - 36 = 0              <<<===== Second Step: Form Perfect Square

(x + 4)² = 36                   <<<===== Third Step: Both the constants to the right

x + 4 = ±√36                 

x + 4 = ±6

x = 6 - 4 or x = -6 - 4

x = 2 or x = -10