Question

Solve the following equation by completing the square

x^2+4x-4=0

Answer 1

x = ±2
`\sqrt[]{2}`-2

Explanation:

x^2+4x-4=0

x^2+4x=4

x^2+4x+4=4+4

(x+2)^2=8

x = ±2
`\sqrt[]{2}`-2