a, x^3-5x^2+x-5=0 b, (x+3)^2+(x-2)(x+2)-2(x-1)^2=7

đúng hay sai? a) nếu mỗi số hạng của tổng ko chia hết cho 5 thì tổng ko chia hết cho 5 e)số chia hết co 2 và 5 thì tận cùng bằng 0

Giúp mình giải bài toán này với ạ

Viết thuật toán và đưa ra tổng S=1+2+4+6+8+...+100

Làm hộ mk những bài đã khoanh tròn với

Làm cho mik phần 1 câu 4 và phần 2 bài4,5

III. Choose the best answer (A, B, C or D). 1. You need to be to follow eggshell carving because it may take two weeks to complete one shell. A. fit B. patient C. careful D. interested 2. My sister is very keen on swimming, and she goes swimming three a week. A. time B. a time C. times D. timings 3. If you choose sewing as your hobby, you will your own clothes. A. make B. get C. do D. take 4. Do you think that hobby is and boring? A. danger B. difficult C. interesting D. easy 5. What does your father do his free time? A. in B. at C. while D. on 6. My brother doesn’t like ice-skating because he thinks it is . A. dangerous B. danger C. in danger D. endangered 7. I think a hobby will always give you and help you . A. pleased – relaxing C. pleasure – relaxed B. pleased – relax D. pleasure – relax 8. My sister’s hobby is sewing, and she can get the sewing patterns from the magazines. A. fashion B. sports C. science D. cooking 9. Nowadays people hours sitting in front of the computers. A. set B. spend C. take D. last 10. If your hobby is greeting card making, you can give your to your friends as presents. A. money B. hobby C. products D. greetings 11. I think you should take up swimming it is suitable for your health condition. A. because B. but C. although D. So 12. I join a photography club and all the members love a lot of beautiful photos. A. make B. take C. making D. taking 13. Will you making models in the future. A. find B. take up C. look for D. pick up 14. I love my sister’s paintings because she is very in using colours. A. care B. careless C. creative D. imagine 15. Do you like _ ? A. fish B. to fish C. fishing D. fished

phân tích đa thức thành nhân tử (x-5)^2 -16 25-(3-x)^2 (7x-4)^2-(2x+1)^2 49(y-4)^2-9(y+2)^2 x^16-1 x^2-6x-y^2+9 giúp MK VỚI MAI MÌNH CẦN RỒI

Giúp mình với mai mình thi rồi :((

what time _________the film________(begin)?