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x+y=7 and a x^2+2h x y+a y^2=0,(a!=0) ...

`x+y=7` and `a x^2+2h x y+a y^2=0,(a!=0)` , are three real distinct lines forming a triangle. Then the triangle is (a) isosceles (b) scalene equilateral (d) right angled

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Knowledge Check

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