-200=-2x^2

Solution for -200=-2x^2 equation:

Simplifying
-200 = -2x2

Solving
-200 = -2x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2x2' to each side of the equation.
-200 + 2x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
-200 + 2x2 = 0

Add '200' to each side of the equation.
-200 + 200 + 2x2 = 0 + 200

Combine like terms: -200 + 200 = 0
0 + 2x2 = 0 + 200
2x2 = 0 + 200

Combine like terms: 0 + 200 = 200
2x2 = 200

Divide each side by '2'.
x2 = 100

Simplifying
x2 = 100

Take the square root of each side:
x = {-10, 10}