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Simplifying
5x2 + -85 = 0
Reorder the terms:
-85 + 5x2 = 0
Solving
-85 + 5x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '85' to each side of the equation.
-85 + 85 + 5x2 = 0 + 85
Combine like terms: -85 + 85 = 0
0 + 5x2 = 0 + 85
5x2 = 0 + 85
Combine like terms: 0 + 85 = 85
5x2 = 85
Divide each side by '5'.
x2 = 17
Simplifying
x2 = 17
Take the square root of each side:
x = {-4.123105626, 4.123105626}
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