làm giúp mk bài 17 . Mk đg cần gấp ,cảm ơn mn trước

Thu gọn rồi tính giá trị của: A=-5x.(2x^2-3x+8)-2x^2(2x-2)-5x với X=4 B=5x(x^2-3)+x^2(7-5x)-7x^2 với X= -5 ^ là mũ nha mn !! ^^

Tìm Min hoặc Max của A= căn x +2/căn x +4 B=căn x -1 / căn x+1

vẽ hộ mik 1 pé pikachu siêu cute và 1 pé ma cx siêu cute vẽ đẹp vào nha !!!

trong một trang trại trồng 3 loại cây : Cam ,Ổi ,Mít . biết số cây cam chiếm 40% số cây trong trang trại , số cây ổi chiếm 1/3 số cây trong trang trại , số cây mít là 80 cây . a, tính số cây trong trang trại đó . b, tính tỉ số giữa số cây ổi và số cây cam.

My brother was earning much less in his previous job than he is now =>(more) Have you got any bigger shirt than that one =>(biggest) I am not taller than anyone in the class =>(lowest) The company is revenuein May is the highest compared to the previous months =>(lower) Sting is the most dedicated singer in the music business => There is not

Giúp em 3 bài này với ạ !!!!!!!!!!!!!

Rút gọn: $\sqrt[]{13-\sqrt{160}}$ - $\sqrt[]{53+4\sqrt{90}}$

Trộn 3 mol SO2 với 2 mol O2 xúc tác, bật tia lửa để p/ứ xảy ra. Sau p/ứ đưa bình về nhiệt độ ban đầu , thấy áp suất giảm 15%. Tính H

24 I couldn't cut the grass because the lawn mower ______ a few days previously A broke down B has been broken C had broken down D breaks down 25 I have never played badminton before . This is the first time I _____ to play A try B tried C have tried D am trying 26 Since _________ , I have heard nothing from him A he had left B he left C he has left D he was left 27 By the end of next year, George ________ English for two years A will have learnd B will learn C has learned D would learn 28 After I ______ lunch, I looked for my bag A had B had had C have has D have had 29 The man got out of the car , ______ round to the back and opened the book A walking B walked C walks D walk 30 Henry _______ into the restaurant when the writer was having dinner A was going B went C has gone D did go 31 He will take the dog out for a walk as soon as he _____ dinner A finish B finishes C will finish D finishing 32 I shall be glad when he ____. A had gone B did go C went D has gone 33 Ask her to come and see me when she ______ her work A finish B has finished C finished D finishing GIẢI GIÙM TUI CÁI NÀY TUI CẦN GẤP NHƯNG GIẢI P ĐÚNG NHA KO ĐC SAO CHÉP MẠNG HAY COPPY NẾU AI GIẢI THÍCH GIẢI THÍCH NÓ LÀ Ở THÌ GÌ NHA CÁC BN XIN CẢM ƠN