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Simplifying
3x2 + 9 = 141
Reorder the terms:
9 + 3x2 = 141
Solving
9 + 3x2 = 141
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + 3x2 = 141 + -9
Combine like terms: 9 + -9 = 0
0 + 3x2 = 141 + -9
3x2 = 141 + -9
Combine like terms: 141 + -9 = 132
3x2 = 132
Divide each side by '3'.
x2 = 44
Simplifying
x2 = 44
Take the square root of each side:
x = {-6.633249581, 6.633249581}
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