0=f^2-144

Solution for 0=f^2-144 equation:

Simplifying
0 = f2 + -144

Reorder the terms:
0 = -144 + f2

Solving
0 = -144 + f2

Solving for variable 'f'.

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

Add '-1f2' to each side of the equation.
0 + -1f2 = -144 + f2 + -1f2
Remove the zero:
-1f2 = -144 + f2 + -1f2

Combine like terms: f2 + -1f2 = 0
-1f2 = -144 + 0
-1f2 = -144

Divide each side by '-1'.
f2 = 144

Simplifying
f2 = 144

Take the square root of each side:
f = {-12, 12}