Solve for F
F=x-\frac{4}{x}
x\neq 0
Solve for x
x=\frac{-\sqrt{F^{2}+16}+F}{2}
x=\frac{\sqrt{F^{2}+16}+F}{2}
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Fx=x^{2}-4
Reorder the terms.
xF=x^{2}-4
The equation is in standard form.
\frac{xF}{x}=\frac{x^{2}-4}{x}
Divide both sides by x.
F=\frac{x^{2}-4}{x}
Dividing by x undoes the multiplication by x.
F=x-\frac{4}{x}
Divide x^{2}-4 by x.
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