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Answer 1

❤Heyyy

your answer is in the attachment

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Answer 2

$if \: equation \: has \: equal \: roots \\ {b}^{2} - 4ac = 0 \\ {5k}^{2} - 4(1)(16) = 0\\ {25k}^{2} = 64 \\ {k}^{2} = \frac{64}{25} \\ k = \frac{8}{5} \\ therefore \: thevalueof \: k \: is \: \frac{8}{5}$