Question

How do you solve `x^2 + 4x = 0` by completing the square?

Answer 1

`x=0 or x=-4`

Explanation:

`x^2+4x =0 or (x+2)^2-4=0 or (x+2)^2=4 or (x+2)=+-2 or x=-2+-2:. x=0 or x=-4`[Ans]