Question

Solve this quadratic equation by completing the square.

x2 + 4x = 15
A. X=-2 19
B. X=-4 + 15
C. X = -4 + 19
D. X = -2 + 15
SUB

Answer 1

-2+√19 or x=-2-√19

Explanation:

completing the square it results :

x=-2+√19 or x=-2-√19