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Simplifying
9x2 + -12 + 4 = 49
Reorder the terms:
-12 + 4 + 9x2 = 49
Combine like terms: -12 + 4 = -8
-8 + 9x2 = 49
Solving
-8 + 9x2 = 49
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 = 49 + 8
Combine like terms: -8 + 8 = 0
0 + 9x2 = 49 + 8
9x2 = 49 + 8
Combine like terms: 49 + 8 = 57
9x2 = 57
Divide each side by '9'.
x2 = 6.333333333
Simplifying
x2 = 6.333333333
Take the square root of each side:
x = {-2.516611478, 2.516611478}
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