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Simplifying
9x2 + -12 + -4 = 100
Reorder the terms:
-12 + -4 + 9x2 = 100
Combine like terms: -12 + -4 = -16
-16 + 9x2 = 100
Solving
-16 + 9x2 = 100
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '16' to each side of the equation.
-16 + 16 + 9x2 = 100 + 16
Combine like terms: -16 + 16 = 0
0 + 9x2 = 100 + 16
9x2 = 100 + 16
Combine like terms: 100 + 16 = 116
9x2 = 116
Divide each side by '9'.
x2 = 12.88888889
Simplifying
x2 = 12.88888889
Take the square root of each side:
x = {-3.590109872, 3.590109872}
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