121-(9x^2)=0

Solution for 121-(9x^2)=0 equation:

Simplifying
121 + -1(9x2) = 0

Remove parenthesis around (9x2)
121 + -1 * 9x2 = 0

Multiply -1 * 9
121 + -9x2 = 0

Solving
121 + -9x2 = 0

Solving for variable 'x'.

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

Add '-121' to each side of the equation.
121 + -121 + -9x2 = 0 + -121

Combine like terms: 121 + -121 = 0
0 + -9x2 = 0 + -121
-9x2 = 0 + -121

Combine like terms: 0 + -121 = -121
-9x2 = -121

Divide each side by '-9'.
x2 = 13.44444444

Simplifying
x2 = 13.44444444

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