• 试题 ID 5575


(1)计算: $\sqrt{9}-\left(\frac{1}{3}\right)^{-1}+(\pi-2023)^0$;
(2)化简: $\left(1-\frac{4}{m+2}\right) \div \frac{m^2-4 m+4}{m+2}$.
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答案:

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解析:

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