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Simplifying
3x2 + -318 = 45
Reorder the terms:
-318 + 3x2 = 45
Solving
-318 + 3x2 = 45
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '318' to each side of the equation.
-318 + 318 + 3x2 = 45 + 318
Combine like terms: -318 + 318 = 0
0 + 3x2 = 45 + 318
3x2 = 45 + 318
Combine like terms: 45 + 318 = 363
3x2 = 363
Divide each side by '3'.
x2 = 121
Simplifying
x2 = 121
Take the square root of each side:
x = {-11, 11}
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