Question

If x=5 is a root of equation kx² _14x_5=0 them find the value of k completing the following activity put x=5 in the equation​

Answer 1

Answer:

k = 3

Step-by-step explanation:

$k {x}^{2} - 14x - 5 = 0 \\ x = 5 \\ k {(5)}^{2} - 14(5) - 5 = 0 \\ 25k - 70 - 5 = 0 \\ 25k - 75 = 0 \\ 25k = 75 \\ k = \frac{75}{25} \\ k = 3$

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