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If combined equation of two sides AB and...

If combined equation of two sides AB and AC of a triangle is `x^(2)-xy-2y^2+x+y=0` and `(1 ,1) `is orthocenter then circum - radius of` Delta ABC` is (1)`(5sqrt(2))/(3)`( 2) `(10sqrt(2))/(3)` (3)` (3sqrt(2))/(5)` (4) `(3)/(10sqrt(2)) `

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