Solve for F
F=\frac{m^{4}+1}{m^{4}-1}
m\neq 0\text{ and }|m|\neq 1
Solve for m
m=-\sqrt[4]{\frac{F+1}{F-1}}
m=\sqrt[4]{\frac{F+1}{F-1}}\text{, }|F|>1
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