X² + 1/ x² + 2 -2x -2/x
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x² + 1/ x² + 2 - 2x -2/x = (x+1/x)² - 2 (x+1/x)
Let x +1/x = t
t² - 2t = t(t-2) = (x+1/x) (x+1/x-2)
since (a+b)² = a² + 2ab + b²
Let x +1/x = t
t² - 2t = t(t-2) = (x+1/x) (x+1/x-2)
since (a+b)² = a² + 2ab + b²
jashanjotkaurdh:
Plz solve it
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