Question

if x²-2kx+1=0 have equal roots then k=​

Answer 1

Answer:

k=1

using b2-4ac=0

b=2k2

a=1

c=1

so

2k2-4×1×1=0

4k2-4=0

4k2=4

k2=4/4

K2=1

k=√1=1

k=1

Answer 2

I hope you understand. If you have any confusion you can ask me.