Question

For what values of k are the roots of x²-4kx+k=0 real and equal?

Answer 1

♠ ANSWER : REFER THE ATTACHMENT.

Answer 2

for equal roots
b^2-4ac = 0
(-4k)^2-4×1×k=0
16k^2-4k=0
4k(4k-1)=0
4k-1=0
4k=1
k=1/4
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