. X-Y / 2x + Y / 2x and 5 / X-5 + X / 5-x x-y/2x+y/2x 5/x-5+x/5-x 5x/x²2xy+y²-5y/x²2xy+y² x²/x²-y²-2xy/x-y+y²/x²-y²

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RELATED INFORMATIONS

1. If the sum of the coefficients in the expansion of (3x − 13x2) n is 128, then the coefficient of 1x3 in the expansion is () A. 7B. -7C. 21D. -21
2. Find the coefficients of (1 + x) ^ 3 + (1 + x) ^ 4 + (1 + x) ^ 5 +. + (1 + x) ^ 20 expansion with x ^ 3 term
3. In (x + 1) ^ 3 + (x + 1) ^ 4 + (x + 1) ^ 5 + +The coefficient of (x + 1) ^ 20 expansion with x ^ 3 term!
4. In the expansion of (x-1) (x + 1) 8, the coefficient of X5 is () A. -14B. 14C. -28D. 28
5. High school mathematics problem f (x) = x ^ 2-2lnx, G (x) = x-2x ^ 0.5 verification: when x is greater than 0, f (x) = g (x) + 2 has a unique solution f（x）=x^2-2Lnx,g（x）=x-2x^0.5 It is proved that f (x) = g (x) + 2 has a unique solution when x is greater than 0
6. 2 ^ x-3 / 2x = 128, find 3-x of X 2x, and the result is - 3 / 13 ok
7. In the expansion of (1 + x) 5 (1-x) 4, the coefficient of X3 is In the expansion of (1 + x) 5 (1-x) 4, the coefficient of X3 is________ 3l, how does C43 (1-x2) * (1 + x) = - 4x3 + 4 come from
8. In the expansion of (1-x) 5 + (1-x) 6 + (1-x) 7 + (1-x) 8, the coefficient of the term with X3 is () A. 74B. 121C. -74D. -121
9. Find the coefficient of X3 in the expansion of (1 + x) + (1 + x) 2 +. + (1 + x) 10
10. Find the coefficient of X3 in the expansion of (1 + x) 2 (1-x) 5
11. 3 ^ (2x-1) = 4 ^ (x + 1) + 2 ^ (2x-1) hurry up! Wrong. The first one is 3 ^ (2x + 1)
12. 2 of 0.01 (2x-3) = 0.02-2x-5 of 0.02
13. There is a problem that a polynomial subtracts x to the second power + 14x-6. Xiaoqiang mistakenly takes it as an addition calculation, and the result is 2x to the second power - x + 3. The correct result is multiple How to calculate? There must be a formula There is a problem that a polynomial subtracts x to the second power + 14x-6. Xiaoqiang mistakenly takes it as an addition calculation, and the result is 2x to the second power - x + 3. What is the correct result?
14. (11x^3-2x^2)+2(x^3-x^2)
15. Calculate the following questions (main process) 1, - 2 (x-3) - 3 (2x-5) 2, - 1 / 2 (x-4) - 1 / 4 (2x + 6) + x-3
16. How many numbers can be taken out from the natural number 1,2,3,4,5... 100, so that any four of them can be divided by 15?
17. The maximum number can be taken from natural number 1.2.3.100, so that the sum of any four numbers can be divided by 15 Speed! process
18. Natural number 1.2.3... 100, how many numbers can be taken out at most, so that the sum of any four numbers can be divided by 15 Is the correct answer 6,
19. Among the 100 natural numbers 1-100, how many can be divisible by 3?
20. Simplify SiNx + cosx + sinxcosx to get the maximum value