Question

find-the-value-of-k-for-which-the-roots-of-9x2+8kx+10=0 has real and equal roots

Answer 1

Answer:

let the root is A

then

2A=-8k/9

A=-4k/9

A^2=10/9

put value of A

then

16k^2/81=10/9

K^2=45/16

K=3√5/4

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