/ Thực hiện các phép tính nhân sau: a/ 2x.(x – 10)

b/ (x – 5).(2x + 1)

2/ Khai triển hằng đẳng thức (x + 7)2.

3/ Viết biểu thức x2 – 16 dưới dạng tích của hai đa thức

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip

Determine whether the question is a statistical question. explain. 1. what is the eye of sixth grade students? 2. at what temperature (in degree fahrenheit) does water freeze? 3. how many pages are in the favorite books of students your age? 4. how many hours do sixth grade students use the internet each week? you!