Gaokao Math Practice Question
$\left(\mathrm{x}^{2}+\frac{2}{\mathrm{x}}\right){ }^{5}$ 的展开式中 $\mathrm{x}^{4}$ 的系数为 （$\qquad$）
- A.10
- B.20
- C.40
- D.80
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