Vẽ góc xOy có số đo là 60 độ . Vẽ đường thẳng d1 vuông góc với tia Ox tại A . trên d1 lấy điểm B sao cho B nằm ngoài góc xOy . Qua B vẽ d2 vuông góc với Oy tại C . Hãy đo xem góc ABC bằng bao nhiêu độ

phân tích đa thức thành nhân tử: 2(x+2)^3 - 1

viết lại câu sao cho nghĩ không đổi

Ex 4. Put the verbs in brackets into the Present Simple. 1. I __________ (not visit) my parents very often. 2. __________ (Mai/ go) to school every day? ~ No, she (go) __________ to school from Monday to Friday. 3. The teachers at our school __________ (give) us lots of homework. 4. My brother __________ (play) tennis, but he __________ (not like) it. 5. How often __________ (they/ go) jogging? 6. We __________ (not study) chemistry because it __________ (be) difficult. 7. __________ (your parents/ watch) TV every night? 8. Mark's class __________ (do) sport on Monday and Wednesday. 9. Children often __________ (use) a computer for school work. 10. Mike __________ (usually/ not play) computer games during the week. Ex 5. Complete the following sentences with will or won't and a verb from the box. buy phone take invite meet offer live end use chat 1. Wait a minute, please. The concert __________ soon. 2. When __________ humans __________ on the Red Planet? 3. OK. At 5 o’clock we __________ you outside the shopping centre. 4. They probably __________ me the job. I had a terrible interview. 5. I'm sorry about losing that book. I __________ you another one next week. 6. __________ you __________ me when you get the news? 7. If It doesn’t rain tomorrow, we __________ our umbrellas. 8. Turn on your laptop tonight. We __________ a little bit. 9. I __________ them here again, whatever you say. 10. I think people __________ CDs in 20 years’ time.

Giúp e gấp câu này với mn !! g(x)=(f$(3-x))^{2}$ g'(x)=f'(3-x) × [2 ×(3-x) ×(-1)] Cho e hỏi là e dùng phương pháp thử thế x=3 vào g'(x) thì ra đc f'(0) ×(0) Vậy làm sao để biết nó đồng hay nghịch biến ạ , hay cách e làm sai

Giúp mk ba bài này ạ!! Mk đag cần gấp

Rewrite these statements as reported speech with tense changes

Tính tổng B = 2+ 5 + 11 +...+47+95

Ex 2. Complete the sentences with the words from the box. photos fishing eggshells music gardening painting model cars swimming l . She usually goes __________ with her friends in the pool near her school. 2. Sarah likes __________. She plants lots flowers and vegetables in her home garden. 3. Every weekend, I go __________ in my uncle’s boat, or just off! the shoreline. 4. In later years, he took up __________ as a hobby. He drew watercolour landscapes. 5. My hobby is listening to __________. It can help relax my mind. 6. I have recently started a new hobby-collecting __________. 7. Most people take __________ and post them on their social networking accounts. 8. Carving __________ is a great hobby that can make you happier. Ex 3. Put the words into the correct column. skating camping football swimming stamps badges gymnastics chess gardening books cartoons crossword sports judo aerobics Jogging dolls board games coins films tennis television cycling game shows PLAY:__________________________________________________________________ GO: ____________________________________________________________________ DO: ____________________________________________________________________ COLLECT:______________________________________________________________ WATCH:________________________________________________________________

mọi người giải giúp mình câu a và c ạ