Question

The value of k for which kx²-x+1=0 has real and equal roots is....?

Answer 1

Answer:

1

alpha+beta =-b/a

alpha*beta=c/a

formula for quadratic equations-:

x^2 -(alpha+beta)X+(alpha*beta)

here alpha+beta=1/k

alpha*beta=1/k

so, k=1