Question

Values of k for which the quadratic equation 2x2
-kx+k=0 has equal roots is:
a) 0 only b) 4 only c) 8 only d)0,8

Answer 1

Answer:

d) 0,8

Step-by-step explanation:

2x^2 -kx+k=0 has equal roots

so

b^2-4ac=0

k^2-4×2×k=0

k^2-8k=0

k(k-8)=0

k= 0 , 8