Giải thích các bước nếu ko sẽ bị cờ đỏ. Đây là phải Toán và Anh nha. Ghi bản dịch và ko dịch giúp mìk
1. Solve √x + √x + √x+. . . = 2.
2. What is the maximum number of parts that can be obtained from cutting a circular
disc using 3 straight cuts?
3. Find the next term of the following sequence: 2, 1, 3, 4, 7, ...
4. Solve for x and y in the following equation (x + 7)^2 + √y − 8 = 0.
6. A perfect number is a positive integer that is equal to the sum of its proper positive
factors. Proper positive factors of a number are positive factors that are less than
the number. For example, 6 = 1 + 2 + 3 is a perfect number because 1, 2 and 3
are the only proper positive factors of 6. Find the next perfect number.
7. If a and b are positive whole numbers such that a < b and a^b = b^a, find apossible value for a and for b.
9. What are the last 5 digits of the sum 1 + 11 + 111 + ... + 111...111(2014 digits)?