Question

Solve the quadratic equation by completing the square.
x²+18x+79=0

Answer 1

`x^2 + 18x=-79 \\ \\ x^2 + 18x+81=2 \\ \\ \boxed{(x+9)^2=2} \\ \\ x+9=\pm \sqrt 2 \\ \\ x=-9 \pm √(2) \\ \\ \boxed{x=-9+√(2), -9-√(2)}`