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Simplifying
5x2 + 12 = 87
Reorder the terms:
12 + 5x2 = 87
Solving
12 + 5x2 = 87
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-12' to each side of the equation.
12 + -12 + 5x2 = 87 + -12
Combine like terms: 12 + -12 = 0
0 + 5x2 = 87 + -12
5x2 = 87 + -12
Combine like terms: 87 + -12 = 75
5x2 = 75
Divide each side by '5'.
x2 = 15
Simplifying
x2 = 15
Take the square root of each side:
x = {-3.872983346, 3.872983346}
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