# Using binomial theorem

Level pending

In the expansion of $$\large (\frac{x^{18}}{k^{17}}+\frac{k^{16}}{x^{15}})^{19}$$, the coefficient of $$x^{12}$$ is $$92378$$.

Find the value of $$k$$.

Note :
$$k$$ is a real number.

×