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Simplifying
-2x2 + 6 = -18
Reorder the terms:
6 + -2x2 = -18
Solving
6 + -2x2 = -18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-6' to each side of the equation.
6 + -6 + -2x2 = -18 + -6
Combine like terms: 6 + -6 = 0
0 + -2x2 = -18 + -6
-2x2 = -18 + -6
Combine like terms: -18 + -6 = -24
-2x2 = -24
Divide each side by '-2'.
x2 = 12
Simplifying
x2 = 12
Take the square root of each side:
x = {-3.464101615, 3.464101615}
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