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Grade 12Algebra

Dear sir please solve this question ….............
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Profile image of swathi krishna
7 Years agoGrade 12
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1 Answer

Profile image of Rajat
7 Years ago
(x^2+1/x^2 ).= (x^2+1/x^2+2) - 2   =.  (x+1/x)^2 - 2
Putting y instead of. ( x+1/x )
f(y) = y^2 - 2
So, f(x) = x^2-2