Tính `a^3+ b^3` , biết `a + b = 7` và `ab = 3`

Ex2. Rewrite the following sentences that keep the same meaning 1. Although Tom was a poor student, he studied very well. In spite of ______________________________________ 2. Although the weather was bad, she went to school on time. Despite ________________________________________​ 3. My mother told me to go to school although I was sick. In spite of ______________________________________ 4. Tom was admitted to the university although his grades were bad. Despite ________________________________________ 5. In spite of his good salary, Tom gave up his job. Although _______________________________________ 6. He didn’t win an Oscar for Best Actor although he performed excellently. Despite _______________________________________

giúp tóoooooooooooooooooooooooooooooooooooo

giúp mình với ạ!!!xin cảm ơn :333 #phương trình lượng giác cơ bản

Cho 5 chữ số: 1, 2, 3, 6, 7 có thể lập được bao nhiêu số có 3 chữ số khác nhau?

BT: q1=4.10-8C, q2= - 3.10-8 C, q3 = 10-8C, AB =5cm, ε=1. Xác định F tổng hợp do q1, q2, tác dụng lên q3 đặt tại các vị trí sau. a. M là trung điểm của AB. b.N là điểm thuộc AB sao cho: AN = 5cm, BN = 10 cm. c. C sao cho AC = 4 cm, BC = 3cm

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mng giúp e vs ạ ! e sẽ vote 5 sao :3

8. What ____________ we ____________ (prepare) for dinner? 9. Where ____________ you ____________ (go) for your vacation?

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