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1. \(\cfrac{3(a+2)^{3}}{(a+2)^{5}} =\) [ ];

2. \(\cfrac{5m-5n}{6m-6n} =\) [ ] \(=\) [ ];

3. \(\cfrac{2x-6y}{x^{2}-9y^{2}} =\) [ ] \(=\) [ ];

4. \(\cfrac{y^{2}-25}{2y-10} =\) [ ];

5. \(\cfrac{m^{2}-8mn+16n^{2}}{m^{2}-16n^{2}} =\) [ ];

6. \(\cfrac{p-7k}{49k^{2}-p^{2}} =\) [ ] \(=\) [ ];

7. \(\cfrac{(x-12)^{2}}{36-3x} =\) [ ];

8. \(\cfrac{a^{7}-a^{5}}{a^{4}+a^{3}} =\) [ ];

9. \(\cfrac{9c^{2}-18c+36}{c^{3}+8} = \) [ ].