2=-x^2+4

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

Simplifying
2 = -1x2 + 4

Reorder the terms:
2 = 4 + -1x2

Solving
2 = 4 + -1x2

Solving for variable 'x'.

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

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

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

Add '-2' to each side of the equation.
2 + -2 + x2 = 4 + -2

Combine like terms: 2 + -2 = 0
0 + x2 = 4 + -2
x2 = 4 + -2

Combine like terms: 4 + -2 = 2
x2 = 2

Simplifying
x2 = 2

Take the square root of each side:
x = {-1.414213562, 1.414213562}