a. The second power of negative half a, the third power of one third a, the fourth power of negative quarter a, and the fifth power of one fifth a Write the nth monomial!

-(1/n)(-a)^n

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1. 0.049×2500+495×0.24+51×4.9=
2. 0.495×250+495×0.24+51×4.95
3. 1 8 27 () 58 59 60 what do brackets add I'm going crazy. Which one do I prefer
4. Classical Chinese from notes of Yuewei thatched cottage (8 11:51:58) On New Year's eve of Wu Wu Wu, he often called for the singer to leave his old age. He took care of his own things, and fell into a dry well. He was on a secluded road in the wilderness, and his family was on the watch. There was no passer-by on the road. He called for a dry call. Fortunately, there was temperature at the bottom of the well, and there was cake and bait to eat. If he was thirsty, he would eat fruit, but he would not die for several days, Also fell into the well. Hold the hook out of the chase, is to see the person. Has only breath &#When my elder brother Qinghu asked me about the situation in the well, he said, "all my thoughts are empty. My heart is as dead as death. But when my mother is sick in bed and waiting for my son to support me, I'm afraid I'm starving to death. I feel so sour that I can't bear to hear it." my elder brother said, "if it's not this idea, Wang Yisheng will drive me out, and I will continue to rope you." 1. Explain the following dotted words (1) More than ten miles away_______________ &#It is also shown that the 35;; \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\(2) he often called on the singer to resign________________ (3) Half a mile from the well (Xu)________________ ________________ Write the meaning of the following sentences in modern Chinese (1) Each with things, conceit to return ________________________________________________________________ (2) When all thoughts are empty, the heart is dead _________________________________________________________________ 3. What are the reasons for Wei's "not to die for several days" after he fell into the well? __________________________________________________________________ __________________________________________________________________ 4. What kind of person is Wei? What inspiration does this story have for you? Give a brief answer in your own words ___________________________________________________________________ ___________________________________________________________________
5. 3\51+4\51+6\51+...+58\51-1\51-3\51-5\51-...49\51
6. 2.19 + 6.48 + 0.51-1.38-5.48-0.62
7. How to write 19.2-7.38 + 0.8 in a simple way
8. 4 out of 3 + 16 out of 15 + 36 out of 35 +. + 196 out of 195 + 266 out of 255
9. 1. Calculation (simple) (5 / 12 + 3 / 8) * 8 / 15, 36 * (1 / 3-1 / 8) 8 / 35 * (1 / 4 + 1 / 3) (1 / 3-51) * 17
10. Simple calculation of 34 △ 35 × 36
11. What's the difference between minus 0.25 square divided by minus half cube + one eighth minus one half? emergency
12. sin²1°+sin²2°+…… +Sin & # 178; 89 ° = how many processes
13. Why is there only one value for √ Sin & # 178; 120
14. If α + β = 120 °, then the minimum value of y = Sin & # 178; α + Sin & # 178; β is
15. Sin minus 60 degrees is a fraction
16. -Why is sin (180-60 degrees) equal to sin 60 degrees
17. Cos & # 178; 60 ° + Sin & # 178; 60 ° the square here & # 178;
18. Calculation: Sin & # 178; 1 ° + Sin & # 178; 2 ° + Sin & # 178; 3 °... + Sin & # 178; 45 ° + Sin & # 178; 46 °... + Sin & # 178; 89 °
19. Given sin θ - cos θ = 1 / 2, then Sin & # 178; θ - cos & # 178; θ = ()
20. 3／cos²20°－1/sin²20°＋64sin²20°