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trucquynhka
2 năm trước
Câu 1 : Tính a) ( x-y )² b) ( 2x + y )³ c) ( x + 3 ) ( x² - 3x + 9 ) Câu 2 : Cho tam giác ABC Vuông tại A có AB = 6cm, AC = 8cm. Gọi AM là trung tuyến của tam giác. a) Tính độ dài BC, AM b) kẻ MD vuông góc với AB, ME vuông góc vs AC, Tứ giác ADME là hình gì ? Vì sao ? M.n ơi....giúp e vs ạ🥰 C.on m.n nhiều 🥰
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