0.09=f*f

Solution for 0.09=f*f equation:

Simplifying
0.09 = f * f

Multiply f * f
0.09 = f2

Solving
0.09 = 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.
0.09 + -1f2 = f2 + -1f2

Combine like terms: f2 + -1f2 = 0
0.09 + -1f2 = 0

Add '-0.09' to each side of the equation.
0.09 + -0.09 + -1f2 = 0 + -0.09

Combine like terms: 0.09 + -0.09 = 0.00
0.00 + -1f2 = 0 + -0.09
-1f2 = 0 + -0.09

Combine like terms: 0 + -0.09 = -0.09
-1f2 = -0.09

Divide each side by '-1'.
f2 = 0.09

Simplifying
f2 = 0.09

Take the square root of each side:
f = {-0.3, 0.3}