If the two equation `x^(2)-cx+d=0` and `x^(2)-ax+b=0` have one common root and the second has equal roots then 2(b + d) is equal to

If the equations x^(2)-px+q=0 and x^(2)-ax+b=0 have a common root and the second equation has equal roots then

If the two equations x^(2)-cx+d=0 and x^(2)-ax+b=0 have one common root and the second has equal roots,then 2(b+d)=(A)0(B)a+c(C)ac(D)-ac

If the equations x^(2) - ax + b = 0 and x^(2) + bx - a = 0 have a common root, then

If the equations x^(2)+ax+b=0 and x^(2)+a'x+b'=0 have a common root then this common root is equal to

If c^(2)=4d and the two equations x^(2)-ax+b=0 and x^(2)-cx+d=0 have one common root. then the value of 2(b+d) ) is equal to (A)? 13 ) ac (C) 2ac(D) ane

If the equations ax^(2)+bx+c=0 and x^(2)+x+1=0 has one common root then a:b:c is equal to

If the equations x^(2)+bx-1=0 and x^(2)+x+b=0 have a common root different from -1 then |b| is equal to