x^2-87=-6

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Solution for x^2-87=-6 equation: 


Simplifying
x2 + -87 = -6

Reorder the terms:
-87 + x2 = -6

Solving
-87 + x2 = -6

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '87' to each side of the equation.
-87 + 87 + x2 = -6 + 87

Combine like terms: -87 + 87 = 0
0 + x2 = -6 + 87
x2 = -6 + 87

Combine like terms: -6 + 87 = 81
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}

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