-33+28z^2-28=0

Solution for -33+28z^2-28=0 equation:

Simplifying
-33 + 28z2 + -28 = 0

Reorder the terms:
-33 + -28 + 28z2 = 0

Combine like terms: -33 + -28 = -61
-61 + 28z2 = 0

Solving
-61 + 28z2 = 0

Solving for variable 'z'.

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

Add '61' to each side of the equation.
-61 + 61 + 28z2 = 0 + 61

Combine like terms: -61 + 61 = 0
0 + 28z2 = 0 + 61
28z2 = 0 + 61

Combine like terms: 0 + 61 = 61
28z2 = 61

Divide each side by '28'.
z2 = 2.178571429

Simplifying
z2 = 2.178571429

Take the square root of each side:
z = {-1.475998452, 1.475998452}