9.
| \((1)\)求 \({\left(2 \sqrt{x}- \dfrac{1}{ \sqrt{x}}\right)}^{6} \) 的展开式中二项式系数最大的项 |
\((2)\)若\(C_{23}^{3n+1}=C_{23}^{n+6}\left(n∈\right){N}^{*}且{\left(3-x\right)}^{n}={a}_{0}+{a}_{1}x+{a}_{2}{x}^{2}+···+{a}_{n}{x}^{n} \) ,\({a}_{0}-{a}_{1}+{a}_{2}-···+{\left(-1\right)}^{n}{a}_{n} \) 求的值