1.

यदि `a/b=25/6` तो `(a^(2)-b^(2))/(a^(2)+b^(2))` का मान बताइए।A. `589/651`B. `589/661`C. `661/589`D. `625/36`

Answer» Correct Answer - B
`a/b=25/6`
`implies (a^(2))/(b^(2))=(25^(2))/(6^(2))`
`implies (a^(2)-b^(2))/(a^(2)+b^(2))=((25)^(2)-6^(2))/((25)^(2)+6^(2))`
`implies (625-36)/(625+36)=589/661`


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