9z^2-36=

Solution for 9z^2-36= equation:

Simplifying
9z2 + -36 = 0

Reorder the terms:
-36 + 9z2 = 0

Solving
-36 + 9z2 = 0

Solving for variable 'z'.

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

Add '36' to each side of the equation.
-36 + 36 + 9z2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + 9z2 = 0 + 36
9z2 = 0 + 36

Combine like terms: 0 + 36 = 36
9z2 = 36

Divide each side by '9'.
z2 = 4

Simplifying
z2 = 4

Take the square root of each side:
z = {-2, 2}