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24-12-2022
Mathematics

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Phân tích đa thức sau thành nhân tử
a) 4x^2 - y^2 + 4x + 1
b) 36 + 2xy - x^2 - y^2
c) 5x(x - 1) - 3x^2(1 - x)
d) 3x^2 - 6xy + 3y^2 - 12z^2

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