-9f^2+5=0

Solution for -9f^2+5=0 equation:

Simplifying
-9f2 + 5 = 0

Reorder the terms:
5 + -9f2 = 0

Solving
5 + -9f2 = 0

Solving for variable 'f'.

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

Add '-5' to each side of the equation.
5 + -5 + -9f2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -9f2 = 0 + -5
-9f2 = 0 + -5

Combine like terms: 0 + -5 = -5
-9f2 = -5

Divide each side by '-9'.
f2 = 0.5555555556

Simplifying
f2 = 0.5555555556

Take the square root of each side:
f = {-0.745355993, 0.745355993}