tìm a và b nhé cảm ơn các bạn rất nhiều

a)16+73:93+6 b)32:2.4+563 tính bình thường

ab-ac-b^2+bc ab-a-2b+2 abc+ab+bc+ca+a+b+c+1

fill in the blanks with the correct form of the verbs given in the brackets 1. Gopi and Hari ..... their homewwork everyday (do) 2. Seema ...... her hair every moring (wash) 3. Many animals ....... in the jungle (live) 4. A fisherman ......... fish(cash) 5. the teacher....... on the blackboard ( write) 6. the sun...... us light and heat ( give) 7. the stars...... at night ( twinkle) 8. the students ....... their uniforms ( wear) 9. my mother ..... me with my lessons ( help) 10. they....... poor people ( help) 11. she..... the answer ( know) 12. I ..... with a pencil. ( write)

So sánh 2 số sau $27^{50 }$ và $81^{38}$

make the negative form of the sentence 1. they were in the kitchen 2. she worked in the USA 3. he descovered Australia in the 18th century 4. chaplin got two Oscars 5. they heard a sceam 6. she gose for a walk every day 7. they love playing tennis 8. Ana is looking for her shoes now 9. they are practising the piano there 10.they will destroy the planet soon tick the correct words in the brackets 1. Ram ( love, loves) chocolates 2. the girl ( dance, dances) well 3. the teacher ( teach, teaches) us grammar 4. the baby ( cry, cries) for milk 5. out school (open, opens) at 9 o'clock 6.they (grow, grows) vegetables 7. we ( enjoy, enjoys) playing games. 8. Bunu ( write, writes) poems 9. Birds (fly, flies) in the sky 10. the cow (eat, eats) grass

Giúp em với ạ 🙏🥺🥺🙏🙏 Em đang cần lắm ạ 🥺🥺🙏🙏

tim gtnn cuar 2x^2+3y^2-2xy+4x-7y+2012

Tìm giá trị lớn nhất giá trị nhỏ nhất

cho một dây dẫn đồng chất, tiết diện đều có điện trở R. Nếu chiều dài của dây tăng gấp 3 lần và tiết diện giảm đi 2 lần thì điện trở của dây là bao nhiêu?