In the expansion of $\left(1+\dfrac{2}{x}\right)^8$, the coefficient of $\dfrac{1}{x}$ is —

Question

Accepted Answer

$16$

Answer

$8$

Answer

$24$

Answer

$32$

In the expansion of (1+2x)8\left(1+\dfrac{2}{x}\right)^8(1+x2​)8, the coefficient of 1x\dfrac{1}{x}x1​ is —