9z^2-121=

Solution for 9z^2-121= equation:

Simplifying
9z2 + -121 = 0

Reorder the terms:
-121 + 9z2 = 0

Solving
-121 + 9z2 = 0

Solving for variable 'z'.

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

Add '121' to each side of the equation.
-121 + 121 + 9z2 = 0 + 121

Combine like terms: -121 + 121 = 0
0 + 9z2 = 0 + 121
9z2 = 0 + 121

Combine like terms: 0 + 121 = 121
9z2 = 121

Divide each side by '9'.
z2 = 13.44444444

Simplifying
z2 = 13.44444444

Take the square root of each side:
z = {-3.666666666, 3.666666666}