Question

find value of k in quadratic equation
x^2-2kx-k=0​

Answer 1

Answer:

Explanation:

x  

2

kx+5k=0

0=0 for equal roots

b  

2

−4ac=0

(2−k)  

2

−4(1)(5k)=0

4k  

2

(k−5)=0

k=0 or k=5