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Simplifying
3x2 + -18 = 12
Reorder the terms:
-18 + 3x2 = 12
Solving
-18 + 3x2 = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '18' to each side of the equation.
-18 + 18 + 3x2 = 12 + 18
Combine like terms: -18 + 18 = 0
0 + 3x2 = 12 + 18
3x2 = 12 + 18
Combine like terms: 12 + 18 = 30
3x2 = 30
Divide each side by '3'.
x2 = 10
Simplifying
x2 = 10
Take the square root of each side:
x = {-3.16227766, 3.16227766}
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