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Simplifying
2x2 + -8 = 166
Reorder the terms:
-8 + 2x2 = 166
Solving
-8 + 2x2 = 166
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 + 2x2 = 166 + 8
Combine like terms: -8 + 8 = 0
0 + 2x2 = 166 + 8
2x2 = 166 + 8
Combine like terms: 166 + 8 = 174
2x2 = 174
Divide each side by '2'.
x2 = 87
Simplifying
x2 = 87
Take the square root of each side:
x = {-9.327379053, 9.327379053}
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