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Simplifying
12x2 + 13 = 85
Reorder the terms:
13 + 12x2 = 85
Solving
13 + 12x2 = 85
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-13' to each side of the equation.
13 + -13 + 12x2 = 85 + -13
Combine like terms: 13 + -13 = 0
0 + 12x2 = 85 + -13
12x2 = 85 + -13
Combine like terms: 85 + -13 = 72
12x2 = 72
Divide each side by '12'.
x2 = 6
Simplifying
x2 = 6
Take the square root of each side:
x = {-2.449489743, 2.449489743}
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