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Simplifying
169 + -9x2 = 0
Solving
169 + -9x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-169' to each side of the equation.
169 + -169 + -9x2 = 0 + -169
Combine like terms: 169 + -169 = 0
0 + -9x2 = 0 + -169
-9x2 = 0 + -169
Combine like terms: 0 + -169 = -169
-9x2 = -169
Divide each side by '-9'.
x2 = 18.77777778
Simplifying
x2 = 18.77777778
Take the square root of each side:
x = {-4.333333334, 4.333333334}
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