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Simplifying
3x2 + -147 + 12 = 0
Reorder the terms:
-147 + 12 + 3x2 = 0
Combine like terms: -147 + 12 = -135
-135 + 3x2 = 0
Solving
-135 + 3x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '135' to each side of the equation.
-135 + 135 + 3x2 = 0 + 135
Combine like terms: -135 + 135 = 0
0 + 3x2 = 0 + 135
3x2 = 0 + 135
Combine like terms: 0 + 135 = 135
3x2 = 135
Divide each side by '3'.
x2 = 45
Simplifying
x2 = 45
Take the square root of each side:
x = {-6.708203933, 6.708203933}
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