usando as propriedades com potências da mesma base transforme em uma só potencia as expressões, por favor preciso pra amanhãaaa

![b) [( \frac{3}{7} ) {}^{4}] {}^{3} b) [( \frac{3}{7} ) {}^{4}] {}^{3}](https://tex.z-dn.net/?f=b%29%C2%A0%5B%28+%5Cfrac%7B3%7D%7B7%7D+%29+%7B%7D%5E%7B4%7D%5D+%7B%7D%5E%7B3%7D+)



![f) \: [(4,2) {}^{3}] {}^{3} f) \: [(4,2) {}^{3}] {}^{3}](https://tex.z-dn.net/?f=f%29+%5C%3A+%C2%A0%5B%284%2C2%29+%7B%7D%5E%7B3%7D%5D+%7B%7D%5E%7B3%7D+)





![l) \: [(2,5) {}^{4}] {}^{5} l) \: [(2,5) {}^{4}] {}^{5}](https://tex.z-dn.net/?f=l%29+%5C%3A+%C2%A0%5B%282%2C5%29+%7B%7D%5E%7B4%7D%5D%C2%A0+%7B%7D%5E%7B5%7D+)



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descul não sei onde está o livro manda a foto
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