z^2+2-4=0

Solution for z^2+2-4=0 equation:

Simplifying
z2 + 2 + -4 = 0

Reorder the terms:
2 + -4 + z2 = 0

Combine like terms: 2 + -4 = -2
-2 + z2 = 0

Solving
-2 + z2 = 0

Solving for variable 'z'.

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

Add '2' to each side of the equation.
-2 + 2 + z2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + z2 = 0 + 2
z2 = 0 + 2

Combine like terms: 0 + 2 = 2
z2 = 2

Simplifying
z2 = 2

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