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Simplifying
-3x2 + 8 = -28
Reorder the terms:
8 + -3x2 = -28
Solving
8 + -3x2 = -28
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 + -3x2 = -28 + -8
Combine like terms: 8 + -8 = 0
0 + -3x2 = -28 + -8
-3x2 = -28 + -8
Combine like terms: -28 + -8 = -36
-3x2 = -36
Divide each side by '-3'.
x2 = 12
Simplifying
x2 = 12
Take the square root of each side:
x = {-3.464101615, 3.464101615}
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