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\frac{47}{400f^{2}}
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\frac{47}{400f^{2}}
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\frac{-1}{400f^{2}}\left(1-48\right)
Express \frac{-\frac{1}{400}}{f^{2}} as a single fraction.
\frac{-1}{400f^{2}}\left(-47\right)
Subtract 48 from 1 to get -47.
\frac{-\left(-1\right)\times 47}{400f^{2}}
Express \frac{-1}{400f^{2}}\left(-47\right) as a single fraction.
\frac{47}{400f^{2}}
Multiply -1 and -1 to get 1.
\frac{-1}{400f^{2}}\left(1-48\right)
Express \frac{-\frac{1}{400}}{f^{2}} as a single fraction.
\frac{-1}{400f^{2}}\left(-47\right)
Subtract 48 from 1 to get -47.
\frac{-\left(-1\right)\times 47}{400f^{2}}
Express \frac{-1}{400f^{2}}\left(-47\right) as a single fraction.
\frac{47}{400f^{2}}
Multiply -1 and -1 to get 1.
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