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2 năm trước
bài 1: Thực hiện các phép tính sau a) ( 2x ³ - x ² - 3x - 6) : (x-2) b) 2x ²/x-5 + 50/x-5 - 20x/x-5 c) 2x(3x-4) d) x ²-2x/x+5 : x ²-4/2x+10 bài 2: phân tích đa thức thành nhân tử: a) x ² - 5x - 14 b) 5x ² - 5xy + x - y c) 3xy + 6y ² d) x ² - 8x + 6 bài 3: Tìm x, biết: a) 3x ² - 15x = 0 b) 2(x-5) - x ² + 5x = 0 c) ( 3x-1)(2x+7) - (x+1)(6x-5)=16 d) (2x+3) ² - 2(2x+3)(2x-5) + (2x-5) ² = x ² + 6x + 64 e) (x^4 + 2x ³ + 10x - 25) : (x ² + 5) = 3
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When you come to the countryside of Vietnam, especially in Hue, you can see a lot of beautiful girls with a palm leaf conical hat on. The conical leaf hat is said the symbol of the Vietnamese (1)__________.The hat is made (2)__________ a special kind of bamboo and young and soft palm leaves. The ribs are shaped into a conical form. The diametre of the hat is usually about between forty and fifty-five centimetres; and it is about twenty-five or thirty centimetres high. The ribs are covered with palm leaves which are tightly stitched onto the bamboo frame. Finally, the hat is usually (3)__________ with a coat of furniture - polish oil.The palm leaf conical hat is mainly used to protect from shine or rain . Beneath the broad rim of the hat do Vietnamese girls girls look more (4)____________and charming 1 A culture B nation C hat D flag 2 A with B to C from D in 3 A drawn B written C painted D covered 4 A attract B attractive C attraction D attractiveness Anh chị giúp e với ạ

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