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 = -88
-4x2 = -88

Divide each side by '-4'.
x2 = 22

Simplifying
x2 = 22

Take the square root of each side:
x = {-4.69041576, 4.69041576}

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