Question

Find the value of k for the quadratic equation kx(x – 2) +5 = 0, so that it has two equal roots.​

Answer 1

Answer:

k=5

Step-by-step explanation:

kx(x-2)+5=0

kx^2-2k+5=0

Two equal roots formula is D=0

b^2-4ac=0

b^2=4ac

(-2k)^2=4×k×5

4k^2=20k

4k^2/20k=1

k/5=1

k=5