Question

For which value of k the quadratic equation kx2 -3x+k = 0 has real and equal roots?

Answer 1

Step-by-step explanation:

kx

2

−kx+1=0

It has equal roots,

∴D=0

⇒(−k)

2

−4(k)(1)=0

⇒k

2

−4k=0

⇒k(k−4)=0

⇒k=0ork=4

k



=0

∵ For k=0, equation will not be quadratic

∴k=4