Hãy điền dấu mũi tên vào tia khúc xạ đó

Giai bất phương trình tích chứa dấu giá trị tuyệt đối: a. |2x - 3|<2 b. |3x - 5 |>10 c. |x - 1| ≤ 2x + 1 d. |-2x +1| + x -3 <2 e. |x - 2|+|1 - 2x|=1 f. |x - 3|-|x + 1|<2 g. | $\frac{2-3|x|}{1+x}$ ≤1

Giúp mình đi Hứa đánh giá 5 sao

thu gọn các biểu thức; A=(1/x+ √x) + (2 √x/x-1) -( 1/x- √x)

2. Bằng phương pháp hoá học, hãy phân biệt các lọ dung dịch mất nhãn sau : a) NaCl, Na2SO4, HCl, H2SO4 b) K2S, ZnCl2, MgSO4, Ca(NO3)2 c) Na2CO3, CaBr2, CuCl2, Mg(NO3)2 d) ZnSO4, AlCl3, K2CO3, Na2S e) FeCl3, MgSO4, CuSO4, Ba(NO3)2 f) HCl, H2SO3, H2SO4

ẢNH HƠI MỜ CÁC BN CÔ GẮNG LM GIÚP MIK VỚI Ạ MIK CẢM ƠN NHIỀU

Viết đoạn văn ngắn phân tích lí tưởng sống của người chiến sĩ lái xe trong “bài thơ về tiểu đội xe không kính”

Tìm y,x số nguyên biết: a) (x - 5) . (y + 2) = 5 b) (2x + 2) . (y - 3) = 6

EX9. Read and answer the question. FRANK'S ACCIDENT It was on my birthday. My parents gave me a wonderful black bike. It was so cool and I raelly liked it. In the afternoon, I rode my bike throygh the forest and I thought it was the best part of my birthday. I was so happy. Suddenly a rabbit ran across the path. I tried to stop but I was too fast. Too late! I fell oft the bike and landed among some bushes. Ouch! My right leg was hurt, I could't move. I shouted for help but there teas no one nearby. I even didn't have a mobile with me. Then there wre strange noises from behind the trees and I saw aomeone. It was Pluto. He was looking for me. He alled an ambulance and then I was taken to the nearest hospital. It was lucky for me. Now, my foot is in plaster and I can't walk to school. But that's not so bad. 1. What did Franks parents give him as a birthday present? .................................................................................................. 2. Did Franks love that present? ................................................................................................. 3. What did he do in the afternoon? .................................................................................................... 4. What suddenly happend when he was riding his bike? .................................................................................................... 5. Did Frank keep going or try to shop? .................................................................................................. 6. What was the matter with his leg? ................................................................................................. 7. Could he walk or ride? .................................................................................................... 8. Why couldn't he make a phone call? ..................................................................................................... 9. What did Pluto do to help Frank? ........................................................................................................ 10. What's wrong with his foot now? .......................................................................................................

giải pt sau ( mọi ng giải từng bước chứ đừng tóm tắt ạ ) c. $(2x-1)^{2}$ -9 $(2x-2)^{2}$ =0 d .6(x-8)(2x-6)(2x-5)=0