1.

Let (alpha,beta) be the focus of x^(2) + 2xy +1 -y^(2) then 12beta + 4alpha is equal to

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Solution :LET parabola be `(X+y-k)^(2)=LAMBDA(y-x+p)` comparing the above EQUATION with parabola`x^(2)+2xy=2x+1-y^(2)`, we get lambda, k and p`


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