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Simplifying
5x2 + -18 = 82
Reorder the terms:
-18 + 5x2 = 82
Solving
-18 + 5x2 = 82
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '18' to each side of the equation.
-18 + 18 + 5x2 = 82 + 18
Combine like terms: -18 + 18 = 0
0 + 5x2 = 82 + 18
5x2 = 82 + 18
Combine like terms: 82 + 18 = 100
5x2 = 100
Divide each side by '5'.
x2 = 20
Simplifying
x2 = 20
Take the square root of each side:
x = {-4.472135955, 4.472135955}
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