1.

यदि `a^(2)+b^(2)+2b+4a+5=0` है तो `(a-b)/(a+b)` का मान ज्ञात करें।A. `3`B. `-3`C. `1/3`D. `-1/3`

Answer» Correct Answer - C
`a^(2)+b^(2)+2b+4a+5=0`
`a^(2)+b^(2)+2b+4a+4+1=0`
`a^(2)+4a+4+b^(2)+2b+1=0`
`(a+2)^(2)+(b+1)^(2)=0`
`a+2=0, a=-2`
`b+1=0, b=-1`
`(a-b)/(a+b)implies(-2+1)/(-2-1)`
`implies (-1)/(-3)=1/3`


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