无
*注意事项:
解:16+(-25)+24+(-35)
=(16+24)+[(-25)+(-35)]
=40+(-60)=-20
从而使运算简化,他根据的是.
①-3,9,-27,81,-243,729,…;
②0,12,-24,84,-240,731,…;
③-6,18,-54,162,-486,1458,….
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