利用因式分解计算或说明理由 要有过程的啦⑴2.9×1234.5+11.7×1234.5-4.6×1234.5⑵0.13×278+64×2.78+23×2.78⑶已知;m=an+bn-cn,其中a=3又3分之1,b=4又2分之1,c=2又6分之5,n=2又5分之3,求m的值⑷5的23次幂—5的21
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![利用因式分解计算或说明理由 要有过程的啦⑴2.9×1234.5+11.7×1234.5-4.6×1234.5⑵0.13×278+64×2.78+23×2.78⑶已知;m=an+bn-cn,其中a=3又3分之1,b=4又2分之1,c=2又6分之5,n=2又5分之3,求m的值⑷5的23次幂—5的21](/uploads/image/z/557599-31-9.jpg?t=%E5%88%A9%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E8%AE%A1%E7%AE%97%E6%88%96%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1+%E8%A6%81%E6%9C%89%E8%BF%87%E7%A8%8B%E7%9A%84%E5%95%A6%E2%91%B42.9%C3%971234.5%2B11.7%C3%971234.5-4.6%C3%971234.5%E2%91%B50.13%C3%97278%2B64%C3%972.78%2B23%C3%972.78%E2%91%B6%E5%B7%B2%E7%9F%A5%EF%BC%9Bm%3Dan%2Bbn-cn%2C%E5%85%B6%E4%B8%ADa%3D3%E5%8F%883%E5%88%86%E4%B9%8B1%2Cb%3D4%E5%8F%882%E5%88%86%E4%B9%8B1%2Cc%3D2%E5%8F%886%E5%88%86%E4%B9%8B5%2Cn%3D2%E5%8F%885%E5%88%86%E4%B9%8B3%2C%E6%B1%82m%E7%9A%84%E5%80%BC%E2%91%B75%E7%9A%8423%E6%AC%A1%E5%B9%82%E2%80%945%E7%9A%8421)
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