Giúp mik vs các bạn , thanks ( không phải vẽ hình )

Trình bày phương pháp nhận biết 3 dung dịch sau NaOH NaCl Ba(OH)2 Gấp

Mn giúp mik trc 9h vs ạ Cám ơn mn nhiều

Tìm x, biết : a, |x + 2| = x b, |x - 1|- 2x = $\frac{1}{2}$ c, |0,5x - 2|-|x + 3| = 0 d, |x - 3,5|+|x + 1,3| = 0 GIÚP MÌNH VỚI ! ĐANG CẦN GẤP

Giúp mik vs các bạn , nhanh nhé

Giải đa0sp câu này giúp em dc ko ạ Cần Câu trả lời đúng ạ 5sao

Viết một đoạn văn miêu tả chủ đề tự chọn có sử dụng từ láy toàn bộ và từ láy bộ phận rồi phân loại chúng

I. Fill each of the numbered blanks in the following passage with a suitable word. Elizabeth Blackwell was born in England in 1821, and ....................... (1) to America when she was ten years old. She was the first woman to ....................... (2) a medical degree. Getting that ....................... (3)was not easy at all. She applied to twenty nine medical schools and was always refused ....................... (4) at that time, only men was admitted to ....................... (5) schools. But she never gave ....................... (6). She studied privately with a doctor ....................... (7) three years. Then she ....................... (8) to all the medical schools again. This ....................... (9), in 1847, the medical institute of Geneva New York ....................... (10) her. However, ....................... (11) Elizabeth began attending classes, the students often treated her unkindly. Also, at first she was even stopped ....................... (12) some of the classrooms demonstrations. Nevertheless, she ....................... (13) stepped back. In 1853, after further study, Elizabeth Blackwell opened the New York institute ....................... (14) women and children. Later, she added medical college for women ....................... (15) that they could also become doctors.

Giúp mình với Mình làm phần a r

Rút gọn biểu thức sau $\frac{x-1}{x-2\sqrt{x}+1}$ +$\frac{\sqrt{x}+1}{x-1}$