How much is the original score?

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• 1. 1: Make an appointment 15 of 85 = 46 of 92 = 15 of 60 = 2 of 44 = 23 of 69 = 2 of 52 = 21 of 91 = 24 of 32= 42 of 77 = 27 of 36 = 30 of 40 = 19 of 95 = 12 of 16 = 36 of 54 = 18 of 36 = 45 of 75=
• 2. A score of 3 is about 2 times, and a score of 5 is about 2 / 3. What's the score? What is the maximum number of its numerator and denominator?
• 3. A score, with 2 about 1, with 3 about 2, the result is 3 / 4, the original score is how much?
• 4. How to use scientific counting to express a score, for example, 1 / 200000? What about other scores?
• 5. Don't divide in the original form
• 6. X + y = 3, x-square-y-square = 21, find the value of cubic x + cubic y
• 7. If x and y are rational numbers and satisfy that the square of x plus 3 times the square of Y minus 12Y plus 12 is equal to 0, the value of x power of y can be obtained?
• 8. Finding the tangent equation of the curve y = x2 at x = 2______ ．
• 9. The tangent equation of derivative y = 2x / (x-1) &# 178; curve y = 2 / X & # 178; + 1 at point P (1,1) is
• 10. Find the maximum or minimum value of (x's square + 2x + 1) (x's square + 2x-3) - 6
• 11. Can you tell me how to convert percentage into score? Is it possible to reduce the score until it cannot be reduced? Please give an example to illustrate the basic principle and operation method. Thank you, for example, how to calculate 2.5%?
• 12. How to make an appointment,
• 13. How to divide For example: 0,1 / 3,5 / 8,5 / 6,9 / 10, () Can 1 / 3 be changed into 2 / 6, 5 / 15 as long as it is a multiple of the denominator‘ Also, it's hard to see the law of the inverse reduction of the above sequence. Can each division of labor be inverse reduced?
• 14. The product obtained by multiplying the square of X + ax + B by X + 3 is the third power of X + 2x + 33?
• 15. Square of 3x-2-5x equation after formulation
• 16. The same solution as equation 5x - (2x-1) = 3-2 (x-1) is () a.5x = 4 B. - 5x = 4 c.5x = 3 d.5x = 2 If the solution of equation 4 (x + 1) - 3 (k-1) + 2 of X is x = k-1, then the value of K is K It is known that 3x ^ 2 (M + 5) - 1y ^ 3 and - 2Y ^ - 3 (n + 1) x ^ - (M + 6) are similar terms
• 17. If the solution of equation 3ax minus two equals 2x is better than that of equation 5x plus one equals 2x minus eleven, the value of a can be obtained
• 18. The minimum integer value of X that makes the value of the algebraic formula 4x-1.5 greater than 3x + 5 is
• 19. A = {x 2-3x + 2 = 0} B = {x 2-4x + a = 0} if a u b = a, the range of a
• 20. X2 + 3x + X-1 of 2 minus 6 of 2 minus X-10 of 4 X-1 / x2 + 3x + 2 minus 6 / x2-x-2 minus X-10 / x2-4