Question

find the value of k for which the equation X square + 5K X + 16 is equal to zero has real and equal roots​

Answer 1

${b}^{2} - 4ac$
${(5k)}^{2} - 4(1)(16) = 0$
$25 {k}^{2} = 64$
${k}^{2} = \frac{64}{25}$
$k = \frac{8}{5}$
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