-2z^2+5=0

Solution for -2z^2+5=0 equation:

Simplifying
-2z2 + 5 = 0

Reorder the terms:
5 + -2z2 = 0

Solving
5 + -2z2 = 0

Solving for variable 'z'.

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

Add '-5' to each side of the equation.
5 + -5 + -2z2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -2z2 = 0 + -5
-2z2 = 0 + -5

Combine like terms: 0 + -5 = -5
-2z2 = -5

Divide each side by '-2'.
z2 = 2.5

Simplifying
z2 = 2.5

Take the square root of each side:
z = {-1.58113883, 1.58113883}