Question

Find the value of k fir which the equation has real and equal roots:


kx² – 2kx – k = 0​

Answer 1

Answer:

Step-by-step explanation:

For a quadratic equation to have equal roots

b^2 -4ac = 0

Here a = k, b = -2k, c = -k

So (-2k)^2 - 4 × k × (-k) =0

4k^2 +4k^2 =0

8k^2 =0

k =0

Note, you may like to check the question again as this value of k seems to be invalid.