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Simplifying
9x2 + -8 = 215
Reorder the terms:
-8 + 9x2 = 215
Solving
-8 + 9x2 = 215
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 + 9x2 = 215 + 8
Combine like terms: -8 + 8 = 0
0 + 9x2 = 215 + 8
9x2 = 215 + 8
Combine like terms: 215 + 8 = 223
9x2 = 223
Divide each side by '9'.
x2 = 24.77777778
Simplifying
x2 = 24.77777778
Take the square root of each side:
x = {-4.977728175, 4.977728175}
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