If x ^ 2 + 2x + 1 + y ^ 2-8y + 16 = 0, find y / X. urgent!

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• 1. How to solve 15 & # 178; + X & # 178; = (25-x) &# 178; + 10 & # 178
• 2. (1-1/2²)(1-1/3²)(1-1/4²)…… *(1-1/2008²)
• 3. ：√﹙﹣3﹚²=___ ,±√3²=___ ,﹣√3²=___ .
• 4. 16﹙x+y﹚²-25﹙x-y﹚²
• 5. Find the unknown x 9 × 3 - seventeen tenths x = 13.4
• 6. Find the unknown x.9x-3.2x = 8.12 4 / 15: x = 1.36:17
• 7. In the system of equations 2x + y = 1 − MX + 2Y = 2 about X and y, if x and y satisfy x + Y > 0, then the value range of M is () A. m＜3B. m＞3C. m≥3D. m≤3
• 8. Given that the equations 4x + 5Y = 5; ax + 4Y = - 1 and 3x + y = 9; 3ax + 4BY = 18 have the same solution, find the value of a + B
• 9. 1. What are the main customs of the "Dragon Boat Festival" in the author's memory? Why is it that "nearly half a century has passed" and that "all kinds of scenes are still clear in memory, never fade, never lose shape"? 2. What is the special impression of the Dragon Boat Festival on the author? 3. The second paragraph introduces the works of art with the theme of "making dragon boat". What do you think is the use of introducing these works? 4. Dragon Boat Festival in addition to dragon boat race, what other customs? Please list three The article has been transferred to my blog website as follows:
• 10. Everyone loves holidays because people don’t need to go to school or work during the holidays.(A) All the holidays mean no school and no work .(B) go,during you out with a holiday friends; during another holiday,you stay at home to eat,talk,and have fun with your family.For example in the US, Everyone thinks New Year's Eve and new year are both for having parties with friends.Christmas Is the time to stay home and exchange gifts with family members.But the things are(c)___________ in Japan.For example,in Japan,New Year is for spending time with the family eating,talking,having fun,and going to the temples.But Christmas is for boy and girl friends to go out and exchange gifts. Of course, if you want to know these different holiday customs, you will learn about different histories and cultures Read the passage and complete the following characters 1、 According to the underlined sentence at (a), change the sentence pattern of the next sentence All the holidays mean _____ school _____ work. 2、 Join the underlined sentences at (b) into sentences .__________________________________________________________________________ 3、 Find a word in the passage and fill in the space at (c) to make the context coherent ___________________________________________________________________________ 4、 According to the passage, answer the following questions 1.Why do people like holidays? 2.In which country do people go out and exchange gifts at Christmas.
• 11. The known function f (x) = x & # 178; - 2x; G (x) = x & # 178; - 2x x ∈ [2,4] (1) Finding the monotone interval of F (x); G (x) (2) Finding the maximum and minimum of F (x); G (x)
• 12. Given that the minimum value of F (x) = - X & # 178; + 2x + 1 on a ≤ x ≤ a + 1 is - 2, find the real number a?
• 13. Find the function f (x) = {X & # 178; 2x-3 (- 2 ≤ x)
• 14. It is known that the function f (x) = the third power of X + the square of AX + 3bx + C (B is not equal to 0), and G (x) = f (x) - 2 is an odd function
• 15. If the function y = f (x) (f (x) is not always 0) and the image of y = - f (x) is symmetric about the origin, then what function is y = f (x)? Wrong, can you do it better
• 16. If and only if the function y = AX2 + BX + C (a ≠ 0) passes through the origin______ ．
• 17. Given the function f (x) = x + 4 / x, judge the monotonicity of F (x) on (0,2) and (2, positive infinity) and prove it
• 18. Given the function & nbsp; f (x) = x2-2 | x | - 1, try to judge the parity of function f (x) and draw the image of function
• 19. Draw the image of function y = X-2 and judge its monotonicity
• 20. Why is the function f (x) = ax ^ 3 + BX ^ 2 + CX (a ≠ 0) odd, B must be 0?