Question

If roots of the quadratic equation 20?-kx+k=0 aré real and equal, then find k

Answer 1

Step-by-step explanation:

If roots of a quadratic equation are real and eual, then the disciminent value of quadratic equation is equal to zero.

b²-4ac=0

b=-k , a=20, c=k

(-k)²-4(20)(k)=0

k²=80k

k=80.

Answer 2

Answer:

answer attached in photo