Question

What is the value of k for which the quadratic equation 3x2 - kx +k=0 has equal roots? ​

Answer 1

Answer:

3x 2−2kx+12=0 will have equal roots are 6 and −6.

Answer 2

for ax²+bx+c =0 to have equal roots then

b²-4ac =0

in given equation b= -k, c=k, a=3

k² - 4×3×k =0

k²-12k =0

k(k-12) =0

k=0 or 12