x*x+8=89

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Solution for x*x+8=89 equation: 


Simplifying
x * x + 8 = 89

Multiply x * x
x2 + 8 = 89

Reorder the terms:
8 + x2 = 89

Solving
8 + x2 = 89

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 + x2 = 89 + -8

Combine like terms: 8 + -8 = 0
0 + x2 = 89 + -8
x2 = 89 + -8

Combine like terms: 89 + -8 = 81
x2 = 81

Simplifying
x2 = 81

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

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