Phân tích đa thức thành nhân tử: x^2 - 25 + y^2 +2xy

1, tìm tập xác định y=cos 2x/(x-1)

MN lm nhanh giúp em bài 5 với ạ

các bn giải hộ mình với ạ Mark the letter A, B, C, or D onyouranswersheet to indicate the wordthatwhosepronunciationisdifferentfrom the others in eachof the followingquestions

giúp với plsssssssssssssssssssssssssssssssssssssssssss

Phân tích đa thức thành nhân tử $(a^2+b^2+ab)^2-a^2b^2-b^2c^2-c^2a^2$

tính tổng sau bằng pascal 1*2*3*4*...*10

Vẽ mầm lo lắng, có màu, ko vẽ trên giấy tập ( ô ly , gạch ngang) NL: mn bt điểm chuẩn thi vào lớp 10 tphcm chưa, cho mk xin với :((

1. Mobile phones and computers are essential technological … for young generation. A. facility B. facilities C. facilitator D. facilitators 2. Poor children don’t have shoes to wearr, so they have to go … A. sandals B. foot C. bare-footed D. shoes 3. The parents are helping their children build … behind their house. A. event B. occasion C. igloos D. passing 4. The stories about the family’s ancestors are … on to next generations. A. pass B. to pass C. passing D. passed 5. They built a hospital here. There … a playground here. A. is B. used to C. used to be D. use to be 6. I hated ice-cream; I … eat ice-cream. A. used to B. didn’t use to C. use to D. wasn’t used to be 7. My gradparents … light their house with oil lamps. A. used to B. use to C. used to be D. is used to be 8. My friends are swimming right now. I can’t join them because I am ill. I wish … A. I were swimming with my friends now B. I was swimming with my friends now C. I swim with my friends now D. Both A & B are correct 9. My grandmother is 60 years old now. She wishes … A. she was young again B. she is young again C. she were old again D. she is old again 10. My computer has stopped working and I don’t know what to do. I wish … A. I knew how should I fix it B. I knew how to fix it C. I would know how to fix it D. I know how to fix it

làm nhanh giúp em với ạ! em cảm ơn ạ