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Simplifying
-1x2 + -12 = -87
Reorder the terms:
-12 + -1x2 = -87
Solving
-12 + -1x2 = -87
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '12' to each side of the equation.
-12 + 12 + -1x2 = -87 + 12
Combine like terms: -12 + 12 = 0
0 + -1x2 = -87 + 12
-1x2 = -87 + 12
Combine like terms: -87 + 12 = -75
-1x2 = -75
Divide each side by '-1'.
x2 = 75
Simplifying
x2 = 75
Take the square root of each side:
x = {-8.660254038, 8.660254038}
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