3-4x^2=85

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Solution for 3-4x^2=85 equation:


Simplifying
3 + -4x2 = 85

Solving
3 + -4x2 = 85

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -4x2 = 85 + -3

Combine like terms: 3 + -3 = 0
0 + -4x2 = 85 + -3
-4x2 = 85 + -3

Combine like terms: 85 + -3 = 82
-4x2 = 82

Divide each side by '-4'.
x2 = -20.5

Simplifying
x2 = -20.5

Reorder the terms:
20.5 + x2 = -20.5 + 20.5

Combine like terms: -20.5 + 20.5 = 0.0
20.5 + x2 = 0.0

The solution to this equation could not be determined.

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