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Simplifying
-2x2 + 200 = -88
Reorder the terms:
200 + -2x2 = -88
Solving
200 + -2x2 = -88
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-200' to each side of the equation.
200 + -200 + -2x2 = -88 + -200
Combine like terms: 200 + -200 = 0
0 + -2x2 = -88 + -200
-2x2 = -88 + -200
Combine like terms: -88 + -200 = -288
-2x2 = -288
Divide each side by '-2'.
x2 = 144
Simplifying
x2 = 144
Take the square root of each side:
x = {-12, 12}
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