Question

Solve the quadratic equation x2 + 12x + 20 = 0 by completing the square.
A. {2, 10}
B. {-2, 10}
C. {-2, -10}
D. {2, -10}

Answer 1

x2 + 12x + 20 = 0
x=-2 or x=-10
{-2, -10}