Solve for f
f=-\frac{2}{x^{4}}
x\neq 0
Solve for x
x=\sqrt[4]{-\frac{2}{f}}
x=-\sqrt[4]{-\frac{2}{f}}\text{, }f<0
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xf=-\frac{2}{x^{3}}
The equation is in standard form.
\frac{xf}{x}=-\frac{\frac{2}{x^{3}}}{x}
Divide both sides by x.
f=-\frac{\frac{2}{x^{3}}}{x}
Dividing by x undoes the multiplication by x.
f=-\frac{2}{x^{4}}
Divide -\frac{2}{x^{3}} by x.
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