x/y এর সাথে কত যোগ করলে যোগফল y/x হবে? 

A (x² - y²)/xy 

B (2x² - y²)/xy 

C (y² - x²)/xy 

D (x² - 2y²)/xy 

Solution

Correct Answer: Option C

= (y/x) - (x/y)
= (y2 - x2)/xy

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