If the equation `x^(2)- bx+ 1 = 0` does not possess real roots, then which one of the following is correct?

If the equation x^2-b x+1=0 does not possess real roots, then range of b

If the equation x^2-b x+1=0 does not possess real roots, then -3 2 (d) b<-2

a, b, c, in R, a ne 0 and the quadratic equation ax^(2) + bx + c = 0 has no real roots, then which one of the following is not true?

a, b, c, in R, a ne 0 and the quadratic equation ax^(2) + bx + c = 0 has no real roots, then which one of the following is not true?

The equation formed by multiplying each root of ax^(2) + bx+ c = 0" by "2 " is "x^(2) = 36x + 24 =0 If the roots of the equation 3ax^(2)+ 2bx + c = 0 are in the ratio 2:3 , then which one of the following is correct ?

If the roots of an equation ax^(2) + bx + c=0 are positive , then which one of the following is correct ?