" If the roots of "5x^(2)-kx+1=0" are real and distinct then "

The roots of x^(2)+kx+k=0 are real and equal, find k.

The roots of x^(2)+kx+k=0 are real and equal, find k.

If the equation x^(2) + 5x + K = 0 has real and distinct roots, then….

If x=1 is a root of x^(2)+kx+5=0 ,

If x=1 is a root of x^(2)+kx+5=0 ,

If the equation x^(2)-kx+1=0 has no real roots then

IF the equation x^2+5x+K=0 has no real and distinct roots, then………

Let (sin a) x^(2)+(sin a) x+(1-cos a)=0 . The set of values of a for which roots of this equation are real and distinct is