Question

if x=2x is a root of the poly nominal face =2xsquare -3x+7K find the value of k​

Answer 1

Step-by-step explanation:

Answer:

★$\large{ \color{red}\bold{k = - \frac{2}{7} }}$

Step-by-step explanation:

$\begin{gathered} \bold{given} \\ \\ \bold{f(x) = 2 {x}^{2} - 3x + 7k} \\ \\ \bold{x = 2 \: \: is \: \: a \: \: zero \: \: f(x)} \\ \\ \bold{f(2) = 0} \\ \\ \bold{f(2) = 2 {(2)}^{2} - 3(2) + 7k} \\ \\ \bold{8 - 6 + 7k = 0} \\ \\ \bold{7k + 2 = 0} \\ \\ \bold{k = - \frac{2}{7} } \\ \end{gathered}$

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Answer 2

Step-by-step explanation:

Then I might have helped you.Love you friends