Tìm số tự nhiên x thỏa mãn:

\(\left[x+1\right]\cdot\left[x+1\right]=100\)

\(\left[x+1\right]^2=100\)

\(\left[x+1\right]^2=10^2\)

\(\left[x+1\right]=10\)

\(x=10-1\)

\(x=9\)

Vậy x=9

Complete the sentences with these words

{ arrangement; agreement; development; entertainment; excitement; payment }

1. Jess and I have made an ......arrangement...... to meet after school.

2. The ......entertainment....... at the festival was great. There was music, dancing and street theatre.

3. Our teacher is collecting the .......payment...... for our class trip so I need to take some money.

4. Babies grow and change very quickly. After the age of two, their ........development......... is slower.

5. There was a lot of .........excitement......... when the holidays started.

6. There was an international ...........agreement......... to try and stop pollution.

Tìm mỗi từ: mong, lo, vui, buồn, nhạt, hãy tìm tiếng thích hợp để tạo thành:

a. Các từ ghép

mong chờ, lo sợ, vui sướng, buồn nôn, nhạt phai

b.Các từ láy

mong mỏi, lo lắng, vui vẻ, buồn bực, nhạt nhòa