Solve for f
f=-\frac{4}{x\left(x-2\right)}
x\neq 2\text{ and }x\neq 0
Solve for x (complex solution)
x=\frac{\sqrt{f\left(f-4\right)}+f}{f}
x=\frac{-\sqrt{f\left(f-4\right)}+f}{f}\text{, }f\neq 0
Solve for x
x=\frac{\sqrt{f\left(f-4\right)}+f}{f}
x=\frac{-\sqrt{f\left(f-4\right)}+f}{f}\text{, }f<0\text{ or }f\geq 4
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1fx\left(x-2\right)=-4
Multiply both sides of the equation by x-2.
fx^{2}-2fx=-4
Use the distributive property to multiply 1fx by x-2.
\left(x^{2}-2x\right)f=-4
Combine all terms containing f.
\frac{\left(x^{2}-2x\right)f}{x^{2}-2x}=-\frac{4}{x^{2}-2x}
Divide both sides by x^{2}-2x.
f=-\frac{4}{x^{2}-2x}
Dividing by x^{2}-2x undoes the multiplication by x^{2}-2x.
f=-\frac{4}{x\left(x-2\right)}
Divide -4 by x^{2}-2x.
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