Question 875488
This is a complete the square problem
2x^2 +4x - 4 = 0
divide by 2
x^2 + 2x - 2 = 0
now add -2 to both sides of =
x^2 +2x = 2
take 1/2 of 2 and square it, then add to both sides of =
x^2 +2x + 1 = 3
(x +1)^2 = 3
take square root of both sides of =
x+1 = square root(3)
x = square root(3) - 1
x = +square root(3) - 1
x = -square root(3) -1
To the student, remember when completing the square to move the loose number (-2) to the right of the equal sign and square root means + or - square root