z^2+2-42=0

Solution for z^2+2-42=0 equation:

Simplifying
z2 + 2 + -42 = 0

Reorder the terms:
2 + -42 + z2 = 0

Combine like terms: 2 + -42 = -40
-40 + z2 = 0

Solving
-40 + z2 = 0

Solving for variable 'z'.

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

Add '40' to each side of the equation.
-40 + 40 + z2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + z2 = 0 + 40
z2 = 0 + 40

Combine like terms: 0 + 40 = 40
z2 = 40

Simplifying
z2 = 40

Take the square root of each side:
z = {-6.32455532, 6.32455532}