Giúp e vs m.n cần gấp lắm ạ

1.Rút gọn  biểu thức P= 2×(a+b)×(a-b)-(a-b)^2+(a+b)^2+b^2 Q=(2x+3)^2+(2x-3)^2-(4x-6)×(3+2x) Bài 2)cho x+y=3 tính giá trị biểu thức A=x^2+2xy+1-4x-4y+2 Giúp vs cần gấp lắm ạ!

cho x+y=3 tính giá trị biểu thức a=x^2+2xy+1-4x-4y-2

Giúp mình vs ạ

Suy nghĩ của bản thân về vị anh hùng Quang Trung ( Nguyễn Huệ) từ 5-7 câu giúp đi mọi người mình cần gấp lắm

A/ CHOOSE THE BEST ANSWER 1. A jeck pack doén't take ..... lots of soace ( A.on B.up C.in D.at) 2. How much....will these means of transport use.?( A.natural gas B.coal C.fuel D.oil ) 3.A carbon.....is about negative effect we have on the environment. A. Foodprint B.renewable C.blueprint D.footprint 4......energy sourses like coal, natural gas and oil produce a lot of carbon dioxin A.non-renewable B.renewable C.renew D.newable 5.A teach needs......calories than a farmer A.less B.fewer C.more D.little 6.Nuclear energy can....enough electricity for the world's needs, but it is expensive A.give B.serve C.provide D.adapt 7.At 6.30 tomorrow,I......to school A.will cycle B.cycle C.will be cycled D.will be cycling Choose the word is pronounced diferently 8.A.celebrated B.danced C.pronounced D.discussed 9.A.convenient B.energy C.expensive D.abundant 10.we are looking for cheap,clean and....soured of energy. These typer of energy won't cause pollution A.effectively B.effect C.effective D.effectiveness 11.In the future most people will travel...flying trận A.on B.in C.of D.at 12.The actress arived....a helicopter A.on B.in C.of D.at 13.Phuc's bike is red...is blue A.I B.my C.mine D.me 14.We....use more solar energy in the future A.use B.uses C.used D.will use Choose the word whose underlined part is pronounced differently from the others A.viewed B.earned C.joined D.acted 15.Phong used to...schoolboy bike when he was young A.arrive B.arrived C.arriving D.have arrived 16.They....to Spain last month A.go B.went C.have gone D.goes 17.In spite of(be)...busy,Nam finished his homework A.been B.is C.was D.being 18.Overcrowded places have a lot of problems,..? A.don't they B.is it C.can't we D.isn't it 19....đi they arrive in Thailand?On 1st May A.who B.when C.where D.what 20.Fossill fuel are.....energy sources A.solar power B.renewable C.non-rewable Dnuclear power B.READING I.unit 12-Skill1: the rise of Megacities! Followwed,Standard,affect,Homelessness,go out,Population, named Chances are,you are reading this article in a big city.(1).........growth is far faster than ever before and that is especially true in cities like Tokyo and Shanghai. People from the countryside move ti cities to find work and a better(2).......of living.These cities are so large they have been(3)......Megacities.The largest is Tokyo, (4).....by Shanghai,Jankarta,and Manila.Some way behind is london,with a relatively small 15 million people However,life in cities is not always better(5).....is a big problem.When people do have homes,they are often in slums where disease and lổ healthcare are problems.Prblems(7)......richer people too.Traffic blocks roads for hours in cities like Bangkok and Mexico City.Air pollution is so bad in dỏm cities that people do not want to(8).... Giúp mình vs m.n ơi

Luyện nói bài văn giải thích một vấn đề Lập dàn bài : em thường đc những sách gì? Hãy giải thích vì sao em thích đọc lại sách ấy( lịch sử, conan,văn hc...) Giúp mình vs m.n ơi

Câu 17: Lê Hoàn được suy tôn lên làm vua vì:

A. lật đổ được triều Đinh.

B. đánh tan quân xâm lược Tống.

C. thái hậu họ Dương tự ý đưa lên ngôi.

D. vua Đinh Toàn còn nhỏ, đất nước đứng trước nguy cơ bị xâm lược.