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Simplifying
2x2 + 15 = 177
Reorder the terms:
15 + 2x2 = 177
Solving
15 + 2x2 = 177
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + 2x2 = 177 + -15
Combine like terms: 15 + -15 = 0
0 + 2x2 = 177 + -15
2x2 = 177 + -15
Combine like terms: 177 + -15 = 162
2x2 = 162
Divide each side by '2'.
x2 = 81
Simplifying
x2 = 81
Take the square root of each side:
x = {-9, 9}
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