1.

यदि `x-y=2, xy=24` है तो `(x^(2)+y^(2))` का मान ज्ञात करें।A. 25B. 36C. 63D. 52

Answer» Correct Answer - D
`x-y=2, xy=24` (given)
by squaring
`x^(2)+y^(2)-2xy=4`
`x^(2)+y^(2)-2xx24=4`
`x^(2)+y^(2)=4+48=52`


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