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Simplifying
3x2 + -60 = 87
Reorder the terms:
-60 + 3x2 = 87
Solving
-60 + 3x2 = 87
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '60' to each side of the equation.
-60 + 60 + 3x2 = 87 + 60
Combine like terms: -60 + 60 = 0
0 + 3x2 = 87 + 60
3x2 = 87 + 60
Combine like terms: 87 + 60 = 147
3x2 = 147
Divide each side by '3'.
x2 = 49
Simplifying
x2 = 49
Take the square root of each side:
x = {-7, 7}
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