-4+4x^2=-1

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Solution for -4+4x^2=-1 equation: 


Simplifying
-4 + 4x2 = -1

Solving
-4 + 4x2 = -1

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 4x2 = -1 + 4

Combine like terms: -4 + 4 = 0
0 + 4x2 = -1 + 4
4x2 = -1 + 4

Combine like terms: -1 + 4 = 3
4x2 = 3

Divide each side by '4'.
x2 = 0.75

Simplifying
x2 = 0.75

Take the square root of each side:
x = {-0.866025404, 0.866025404}

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