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Simplifying
9x2 + -64 = 9
Reorder the terms:
-64 + 9x2 = 9
Solving
-64 + 9x2 = 9
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '64' to each side of the equation.
-64 + 64 + 9x2 = 9 + 64
Combine like terms: -64 + 64 = 0
0 + 9x2 = 9 + 64
9x2 = 9 + 64
Combine like terms: 9 + 64 = 73
9x2 = 73
Divide each side by '9'.
x2 = 8.111111111
Simplifying
x2 = 8.111111111
Take the square root of each side:
x = {-2.848001248, 2.848001248}
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