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Simplifying
56 = 2x2 + 12
Reorder the terms:
56 = 12 + 2x2
Solving
56 = 12 + 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.
56 + -2x2 = 12 + 2x2 + -2x2
Combine like terms: 2x2 + -2x2 = 0
56 + -2x2 = 12 + 0
56 + -2x2 = 12
Add '-56' to each side of the equation.
56 + -56 + -2x2 = 12 + -56
Combine like terms: 56 + -56 = 0
0 + -2x2 = 12 + -56
-2x2 = 12 + -56
Combine like terms: 12 + -56 = -44
-2x2 = -44
Divide each side by '-2'.
x2 = 22
Simplifying
x2 = 22
Take the square root of each side:
x = {-4.69041576, 4.69041576}
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