4x^2-4=-1

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

Simplifying
4x2 + -4 = -1

Reorder the terms:
-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}