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∛(8,127³+30.8,127.1,873+1,873³= =∛(8,127³+1,873³+30.8,127.1,873= =∛((8,127+1,873)(8,127²-8,127.1,873+1,873²)+30.8,127.1,873)= =∛(10.8,127²-10.8,127.1,873 +10.1,873²+30.8,127.1,873)= =∛(10.8,127²+20.8,127.1,873+10.1,873²)= =∛10.(8,127²+2.8,127.1,873+1,873²)= =∛10.(8,127+1,873)²=∛10.10²=∛10³=10