mọi người giải hộ mình ạ hứa vote 5 sao

Công thức này chứng minh thế nào vậy ạ??

giúp mình vs mình 1h nx phải nộp rùi

So sánh điểm giống và khác nhau giữa sử thi , truyền thuyết và cổ tích

Her school is ………………………..... away than mine. * 5 điểm more far farther more farther farer

Cắc Sông Lớn ở Đông Nam Á bắt nguồn từ đâu ?

a) 5x(x + 2) + (x + 1)(x – 10) b) (a + b)2 + (a +b)(a – b) c) (9x + 1)2 + (5 – x)(5 + x) – (26 + 18x)

Cho 100 ml dung dịch HCl 2,5 M vào 100 ml dung dịch NaAlO2 1,0M thu được kết tủa có khối lượng là bao nhiêu? giúp e vs mn

IV. Read the passage and answer the questions. Hogwarts is a very special school: it is a school for young witches and wizards. It is located near a lake in Scotland, but its students come from Scotland, England, Ireland and Wales. School begins on September 1, and students all get on a special train in London to go to school together. Hogwarts is a boarding school, so students have classes and live at the school. They have to wear robes as their uniform. Each student has an owl for a pet. The owls also carry letters from families. All students play a sport called the quidditch, a kind of flying soccer. Players try to hit the ball with a stick while mounting their flying brooms. 1. Who goes to Hogwarts School? ->It’s a 2. How do students get to school on their first day? -> Students all get on a special train ........ 3. What do the students wear for their uniforms? -> They have to wear robes as their uniform…………… 4. What do owls do for the students? ->………… 5. What do players use to hit the ball in a quidditch? ->Players .........................

bài 3 1 nhân 2 + 2 nhân 3+3 nhân 4 +4 nhân 5+...+9 nhân 10=? phân tích và giải chi tiết giúp em