X equals x2 plus 4x-2

Answer 1

Assuming that by sticking a question mark after that equation, you wish to solve it for x, it can be done this way:

x = x2 + 4x - 2

x2 + 3x = 2

x2 + 3x + 9/4 = 2 + 9/4

(x + 3/2)2 = (8 + 9)/4

x + 3/2 = ± √(17/4)

x = -3/2 ± √17/2

x = (-3 ± √17) / 2