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
