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Simplifying
9x2 + -12 + 9 = 5
Reorder the terms:
-12 + 9 + 9x2 = 5
Combine like terms: -12 + 9 = -3
-3 + 9x2 = 5
Solving
-3 + 9x2 = 5
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '3' to each side of the equation.
-3 + 3 + 9x2 = 5 + 3
Combine like terms: -3 + 3 = 0
0 + 9x2 = 5 + 3
9x2 = 5 + 3
Combine like terms: 5 + 3 = 8
9x2 = 8
Divide each side by '9'.
x2 = 0.8888888889
Simplifying
x2 = 0.8888888889
Take the square root of each side:
x = {-0.942809042, 0.942809042}
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