If `a ,b ,c ,d` are four consecutive terms of an increasing A.P., then the roots of the equation `(x-a)(x-c)+2015(x-b)(x-d)=0` are

If a,b,c,d are four consecutive terms of an increasing A.P.then the roots of the equation (x-a)(x-c)+2(x-b)(x-d)=0 are a. non-real complex b.real and equal c.integers d.real and distinct

both roots of the equation (x-a)(x-b)+(x-b)(x-c)+(x-c)(x-a)=0 are

If a,b,c are in A.P. then the roots of the equation (a+b-c)x^2 + (b-a) x-a=0 are :

If a