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There have been 1 items by b0yFa (Search limited from 05-06-2020)
Posted by b0yFa on 28-01-2014 - 21:35 in Đại số
phân tích đa thức thành nhân tử
$$(x+y+z)^3 - x^3 - y^3 - z^3#$
$$x^4 + 2010x^2 + 2009x + 2010$$
$$a(b+c)^2(b-c) + b(c+a)^2(c-a) + c(a+b)^2(a-b)#$