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Answer:
f(x)=x^2-1/x^2+1
Step-by-step explanation:
f(1/5)=(1/5)^2-1/(1/5)^2+1
=(1/25-1)/(1/25+1)
=(1-25)/25/(1+25)/25
= -24/25/26/25
= -24/26
= -12/13
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