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Simplifying
-2x2 + -8 = -136
Reorder the terms:
-8 + -2x2 = -136
Solving
-8 + -2x2 = -136
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '8' to each side of the equation.
-8 + 8 + -2x2 = -136 + 8
Combine like terms: -8 + 8 = 0
0 + -2x2 = -136 + 8
-2x2 = -136 + 8
Combine like terms: -136 + 8 = -128
-2x2 = -128
Divide each side by '-2'.
x2 = 64
Simplifying
x2 = 64
Take the square root of each side:
x = {-8, 8}
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