X / (X-2) - 1 = 6 / (square of x-4)

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• 1. X2 + y2 = (x + y) 2 + P = (X-Y) 2 + Q, then p=______ ，Q=______ ．
• 2. To solve the equations: {5x-4y = 12} {3x-y = 7}
• 3. Solving a mathematical problem about proposition and proof The following is the definition of "mysterious number": a positive integer that can be expressed as the square difference of two consecutive even numbers is called a mysterious number. Please judge 4, 12, 20, 28, 2012 as a mysterious number according to the definition of "mysterious number". Why?
• 4. Let u = {positive integer no more than 5}, a = {x | x ^ 2-5x + q = 0}, B = {x | x ^ 2 + PX + 12 = 0}, (CUA) UB = {1,3,4,5}. Find P, Q, AUB I just learned the basic operation of set. The teacher left this question as a thinking question. I've read your explanation, but I still don't quite understand it
• 5. Let u = {positive integer no more than 5}, a = {x | x2-5x + q = 0}, B = {x | x2 + PX + 12 = 0}, (∁ UA) ∪ B = {1, 3, 4, 5}, find P, Q and set a, B
• 6. Given the complete set a = {1,2,3,4,5,6,7,8,9}, anb = {2}, (CUA) n (cub) = {1,9}, (CUA) NB = {4,6,8}, determine a, B Sorry, wrong number. It's the complete U
• 7. Given that M is not equal to 3, what is the solution of the equation MX - 3 = 3x?
• 8. Given that two of the equations 4x & # 178; - 7x-3 = 0 are X1 and X2, then 2 / X1 + 2 / x2 =, (x1-x2) is the absolute value of X1 & # 178; + x2 & # 178; =?, Given that two of the equations 4x & # 178; - 7x-3 = 0 are X1 and X2, then 2 / X1 + 2 / x2 =, (x1-x2) is the absolute value of X1 & # 178; + x2 & # 178; =?,
• 9. When Xiao Li solved the equation 5a-x = - 8-4x + 3A about X, he mistook the left-x as + X, and got the solution of the equation as x = - 2 to solve the original equation Thank you. I can do it. It's just the first time I try Baidu
• 10. It is known that the center of circle C and point P (- 2,1) are symmetric with respect to the line y = x + 1. The line 3x + 4y-11 = 0 intersects circle C at two points a and B, and | ab | = 6, then the equation of circle C is______ ．
• 11. A certain market bought a batch of clothes worth 80000 yuan. When the price of each piece was 280 yuan, 150 pieces were sold. In order to promote sales, the shopping mall decided to reduce the price, but hoped to get back the cost when another 200 pieces were sold. So how much yuan can the clothing store reduce the price at most?
• 12. √(y+1)≤4÷(y-1)
• 13. Solving inequality |How to solve x-500 | 5 | 2x + 5 | ≤ 7 | 2x-5 | > 3 | 7-5x | ≤ 3 1 ≤ | 2x-1 | < 2
• 14. Solving inequalities for mathematical problems Solving inequality system brace 2 (x-1) ≤ 3x + 1 x/3
• 15. Prove by analysis: a square b square + b square C square + C square a square ≥ ABC (a + B + C) I just asked. Unfortunately, I read the answer. Here is the analytical method, not the difference method, Using basic inequalities and so on
• 16. 1. Compare the size ①a^2+b^2___ (a+b)^/2 ②ab_____ (a^2+b^2)/2 ③(a+b)^2____ 4ab ④[(a+b)/2]^2_____ (a^2+b^2)/2 2. Given x > 0, Y > 0, xy = 4, then the minimum value of X + y? 3. Given x > 0, Y > 0, x + y = 6, then the maximum value of XY? 4. Given that x > 0, then the minimum value of (32 / x) + 2x is? Trouble has a process
• 17. Inequality | x-4 | + | x-3|
• 18. System of inequalities In a visit activity, students are divided into eight groups. If each group is more than one person, the number of visitors is more than 156. If each group is less than one person, the number of visitors is not more than 150.
• 19. A math problem (high school inequality) Let the plane region represented by inequality x > 0 be o [n] y>0 y
• 20. Given the function f (x) = x2-2ax + 5, if f (x) is a decreasing function in the interval (- ∞, 2), and for any x1, X2 ∈ [1, a + 1], there is always | f (x1) - f (x2) | ≤ 4, the value range of real number a is obtained