Phân tích đa thức thành nhân tử k) 4x2 + 4x + 1 l) 9x2 – 6x + 1 m) 9x2 – 1 n) x4 – 1 o) (x + 1)2 – 2(x + 1) p) (x + 2)2 + 3(x + 2) q) (x – 1)3 – (x – 1)2 r) (x – 2)3 – (x – 2)2 GIÚP MÌNH VỚI 20 ĐIỂM Ạ!

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