A. -1
B. 4
C. 6
D. -5
The expression x2-5x-6 is negative if x lies in
If one root of the equation ax2+bx+c=0 is equal to the nth power of the other then (acn)1/n+1+(anc)1/n+1+b=
If the sum of the roots of the equation 5x2-4x+2+k(4x2-2x-1)=0 is 6,then k=
The least integral value of x for which 33-x(2+3x)>0 is
If the tangent at the point P (2,4) to the parabola y2= 4ax meets the parabola y2= 8x + 5 at Q and R, then the midpoint of QR is