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Can you do mathematical thinking: factor by grouping: a^3 + 2a^2 + 5a + 10

[From: ] [author: ] [Date: 12-07-06] [Hit: ]

a^3 + 2a^2 + 5a + 10 = (a+2) (a^2 + 5) = (a+2) (a+sqrt(5)) (a-sqrt(5)).

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