• (a)(x+1/x)^2-(x-1/x)^2
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Answer:
Step-by-step explanation:
(x+1/x)²-(x-1/x)²
= x²+2×x×1/x+1/x² - x²-2.x.1/x+1/x²
=1/x²+1/x²
=2/x²
Is correct mark me brainlist
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