5z^2-80=0

Solution for 5z^2-80=0 equation:

Simplifying
5z2 + -80 = 0

Reorder the terms:
-80 + 5z2 = 0

Solving
-80 + 5z2 = 0

Solving for variable 'z'.

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

Add '80' to each side of the equation.
-80 + 80 + 5z2 = 0 + 80

Combine like terms: -80 + 80 = 0
0 + 5z2 = 0 + 80
5z2 = 0 + 80

Combine like terms: 0 + 80 = 80
5z2 = 80

Divide each side by '5'.
z2 = 16

Simplifying
z2 = 16

Take the square root of each side:
z = {-4, 4}