value of @

The values of @ for which x^2 +y^2 +6x+5 +@(x^2 +y^2 -8x +7)=0 dwindles into a point is ...........

6 Answers

one value = 5/7

no.............answer is 2Â±4√2/3

eureka:

Hint: The radius of the new circle formed should be zero :)

that only i did!!

but i got the above answer..(maybe calculation mistake)

yes.. dear.. i gave this for eureka's satisfaction!

I did not want to do the calculations either :)

oops , i made a bad error wrote the wrong eq..

yes answer is coming to be 2+_ 4âˆš2/3

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