Question

What is the most convenient method to solve the quadratic equation ( x + 4 )² = 15

A. extracting square root
B. factoring
C. completing the square
D. quadratic formula​

Answer 1

B

Explanation:

Answer 2

Factoring

Explanation:

(x+4)² = 15

x² + 8x + 16 = 15

x² + 8x + 1 = 0

`x = ( - 8 + √(64 - 4) )/(2) = - 4 + √(15) \\ \\ x = ( - 8 - √(64 - 4) )/(2) = - 4 - √(15)`

I hope this helps you :)