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Simplifying
64 = 2x2 + -8
Reorder the terms:
64 = -8 + 2x2
Solving
64 = -8 + 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.
64 + -2x2 = -8 + 2x2 + -2x2
Combine like terms: 2x2 + -2x2 = 0
64 + -2x2 = -8 + 0
64 + -2x2 = -8
Add '-64' to each side of the equation.
64 + -64 + -2x2 = -8 + -64
Combine like terms: 64 + -64 = 0
0 + -2x2 = -8 + -64
-2x2 = -8 + -64
Combine like terms: -8 + -64 = -72
-2x2 = -72
Divide each side by '-2'.
x2 = 36
Simplifying
x2 = 36
Take the square root of each side:
x = {-6, 6}
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