Is it the third power of K

It should be z = k ^ 3, maybe it's wrong

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1. It is proved that: 1-2cn1 + 3cn2-4cn3 + ··· + [n + 1] [- 1] ^ n =?
2. If the power 0 of (X-5) is meaningless, then x is?
3. It is known that: the m power of 3 = a; the n power of 3 = B. the M + n power of 3 and the 2m + 3N power of 3 are represented by a and B
4. The m power of 2 = the n power of 5 = 10 to find m + n
5. Let a = Log1 / 3 (2), B = Log1 / 2 (3), C = (0.5) ^ 0.3, then the order of a, B, C from large to small is The one that is not based on 10 is based on 1 / 3, and the other is based on 1 / 2.
6. It is known that LG2 = a, lg7 = B, and log8 9.8 is represented by a and B
7. If LG2 = a, what is log2 (5)?
8. （log2 3+log4 27）(log3 4+log27 16)
9. Please explain in detail why this problem should be calculated in this way? In order to buy a house, Mr. Zhang borrows from the bank. The amount of loan is d yuan. He is prepared to repay P yuan every month. The monthly interest rate is r M=logP-log(P-DxR)/log(1+R) On the first floor, I don't understand how you calculate these two formulas: the sum of principal and interest of repayment is p (1 + R) ^ (m-1) + P (1 + R) ^ (m-2) +... + P = P [(1 + R) ^ M-1] / R, Let D (1 + R) ^ m = P [(1 + R) ^ M-1] / R, We get (1 + R) ^ m = P / (P-D * r),
10. If you can't see the website, please see exercise 2.8 on page 85 of senior one Why can X be equal to 1? In this case, the number in the root sign = 0 is not meaningless In the fourth question, a and B belong to (- 1,1), which seems to have nothing to do with the meaning? I can't understand the second and third questions of question 5 I have a poor foundation and can't understand in class a. B belongs to (- 1,1). Does it mean a = - 1, B = 1 or a = 1, B = - 1
11. Square or something? Not in the world
12. Complex number (2 + I) I / 1-I= Write the answer directly
13. To introduce an animal in English, singular or plural
14. Change the singular to the plural and the plural to the singular to give reasons This is a book That is a box Are those rulers What are these? They are toys That is an egg What's this in english? Your bok isn't in the desk Is it your schoolbag?
15. Why do tomeatoes use the plural a small bowel of mutton noodles with tomeatoes Why do you use the plural
16. The expansion of the number system of the third volume of mathematics and Science in the third year of the people's Education Press When Z is what number, Z & sup2; + 3Z + 2 is a real number? Please give the standard process,
17. Extension of number system and complex number It is known that the locus of the corresponding point of the complex Z satisfying the cubic power of | Z | - 2 | Z | - 3 = 0 is () A1 circle B segment C 2 points D 2 circles
18. Are negative numbers and fractional decimals natural numbers, and 0
19. Multiple choice questions on the concept of complex number The elements in the complex set correspond to the elements in the set of all vectors in the complex plane ---------If this judgment is correct, please explain the reason
20. On line and so on Given that Z2 is a complex number, | 2i-z2 | = 1, why does it mean that the trajectory of Z2 is a circle with radius 1 and center (0,2)?