A. b+d=ac
B. 2(b+d)=ac
C. b+d=2ac
D. (b+d)2=a+c
If the system of equations x + y + z =6, x + 2y + 3z=10 has no solution then λ=
If b2-4ac>0,then the graph of y= ax2+bx+c
If ax2+bx+c=0 and bx2+cx+a=0 have a common root and a≠0 then a3+b3+c3/abc=
If α, β are different values of θ satisfying the equations 5 cos θ+12 sin θ=11 then the value of sin (α+β)=
The quadratic equation x2 + ax + bc = 0, x2 + bx + ca = 0 have a common root, then the quadratic equations whose roots are the remaining roots in the given equations is (where, a ≠ b)
If α,β are the roots of ax2+bx+c=0 then (α/β – β/α)2=
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A number consists of two digits whose product is 30.If the digits are interchanged the resulting numbers will exceed the previously by 9.The number is
If the roots of x2-2(5+2k)x+3(7+10k)=0 are equal then k=