Given the square of √ (x-1000) + (998-x) = 2000, y = √ m + 8 + √ M-1 + √ 1-m, find the square root of y-x

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1. =Solve the quoting problem by using the fractional equation A. The distance between B and a is 40km. A and B start from a to B by bike at the same time. A's speed is 2km faster than B's. When a goes 4km away from B, it is changed to walking, and the speed is reduced by 8km per hour. As a result, a and B arrive at B at the same time to find the speed of a and B Sorry for the wrong words=
2. Using the applied knowledge of fractional equation to solve Xiao Wang bought 20 IC cards and sold them at the price of 15 yuan each. When there were only the last two cards left, Xiao Wang had to sell them at the purchase price in order to sell them out in time. In this way, the profit margin was 2.5% lower than that of selling them all at the price of 15 yuan
3. If the equation x2-4x + k = 0 has a common root with the equation x2-x-2k = 0, then the value of K should be______ ．
4. If the equation x2-4x + k = 0 has a common root with the equation x2-x-2k = 0, then the value of K should be______ ．
5. The square of x-4x + 2k-1 = 0 has two identical solutions to find the solution of K sum equation
6. Noel's equation x + 4x + K + 2K minus 35 = 0 has a root of 0, then the value of K is 0
7. When m is an integer, the equations x2-4x + M = 0 and x2-3x - (m-1) = 0 have integer roots
8. A new coating is prepared with 100 yuan a coating and 200 yuan B coating. Its price per kilogram is 3 yuan less than that of a coating and 1 yuan more than that of B coating. How much is the price per kilogram of this new coating?
9. Xiaoying and several students went to the stationery store to buy exercise books. The stationery store stipulated that if the purchase reached a certain quantity, they could buy them at the wholesale price. So they gathered together 60 yuan to buy them at the wholesale price. In this way, the number of exercise books purchased was 30 more than that purchased at the retail price. If the wholesale price of each exercise book was 45 times of the retail price, what was the retail price of each exercise book How much is it?
10. Some problems about fractional equation in mathematics of grade two I'll take the math exam in the afternoon, 1. In the construction of new socialist countryside, a town decided to reconstruct a section of highway. It is known that the project will take 40 days to be completed by project team a alone. If project team B does it alone for 10 days, it will take 40 days to complete, Then the rest of the project will take 20 days for the two teams to complete. (1) the number of days required for team B to complete the project alone. (2) the number of days required for the two teams to complete the project together 2. It is known that a certain project will be completed within 12 days by the cooperation of team a and team B, and the total cost of the project is 13800 yuan. The time for team B to complete the project alone is 10 days less than the time for team a to complete the project alone, In addition, the daily project cost of team a is 150 yuan more than that of team B. (1) how many days does it take for team a and team B to complete the project separately? (2) if it takes 20 days and 30 days for team a and team B to complete the project separately, the project management department decides to choose one of the two teams to complete the project separately. From the perspective of saving funds, which team should be chosen and the reasons should be explained 3. For a section of Expressway under construction, the cooperation of Party A and Party B can be completed in 24 days, which costs 1.2 million yuan; if Party A works alone for 20 days, the rest of the project will be completed by Party B in 40 days, which costs 1.1 million yuan, How many ten thousand yuan each Answer person on the first floor: why do I think your first question seems to be wrong
11. Given (X-2) + √ Y-X + 1 = 0, find the square root of X + y
12. We know that the square of X is equal to 18. When x is greater than 0, the integral part of X is () 2. If the square root of a number is x, the number greater than 5 is
13. square root The relationship between the resistance R, power P and the voltage u at both ends of an electrical appliance is p = u & # 178; △ R. the resistance of an electrical appliance is 15 Ω. Now the power of this electrical appliance is 1500 W. please help to calculate how much voltage the electrical appliance should be connected to?
14. What is the result of adding 1 to the third power of 2 and 3 to the third power of 100?
15. Use 0,1,2,3 to form the even number of three digits without repetition kuai
16. How many even four digit numbers without repetition can be made up of the six numbers 0, 1, 2, 3, 4 and 5
17. How many even four digit numbers () A. 6B. 10C. 12D. 24
18. There are six numbers from 0 to 5. 1. How many numbers can be made up without repetition? ② How many even digits can be made up of 5 digits without repetition? ③ How many digits are larger than 24305 among the five digits that can be composed of no duplicate digits?
19. Ask a permutation question: how many six digit numbers can be made up of 3 odd numbers and 3 even numbers from the 10 numbers 0 to 9?
20. How many even four digit numbers can be formed with 01234?