Solve for f
f=\frac{1}{x^{2}}
x\neq 0
Solve for x (complex solution)
x=-f^{-\frac{1}{2}}
x=f^{-\frac{1}{2}}\text{, }f\neq 0
Solve for x
x=\frac{1}{\sqrt{f}}
x=-\frac{1}{\sqrt{f}}\text{, }f>0
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x^{2}f=1
Multiply x and x to get x^{2}.
\frac{x^{2}f}{x^{2}}=\frac{1}{x^{2}}
Divide both sides by x^{2}.
f=\frac{1}{x^{2}}
Dividing by x^{2} undoes the multiplication by x^{2}.
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