Question

Solve 2x2 + 8x - 12 = 0 by completing the square. Show step-by-step solution

Answer 1

Factor out 2 x^2 +4x -6 = 0

Take half middle coefficient and square it:
x^2 +4x +4 -6 = 4 (x+2)^2
                       = 10 x+2
                       = sqrt(10) x
                       = +-sqrt(10) -2

Answer 2

Answer:

112

Step-by-step explanation:

i dont have a explanation i just have a answer.