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Simplifying
9x2 + 19 = 91
Reorder the terms:
19 + 9x2 = 91
Solving
19 + 9x2 = 91
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-19' to each side of the equation.
19 + -19 + 9x2 = 91 + -19
Combine like terms: 19 + -19 = 0
0 + 9x2 = 91 + -19
9x2 = 91 + -19
Combine like terms: 91 + -19 = 72
9x2 = 72
Divide each side by '9'.
x2 = 8
Simplifying
x2 = 8
Take the square root of each side:
x = {-2.828427125, 2.828427125}
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