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When the power of an integer is n-2x-2, what is the value of the power of an integer
X ^ (n + 2) - 2x ^ (2-N) + 2 is cubic,
N + 2 = 3 or 2-N = 3,
N = 1 or n = - 1,
The polynomial is x ^ 3-2x + 2. When x = - 1, the original formula = - 1 + 2 + 2 = 3,
Or the polynomial is x-2x ^ 3 + 2, when x = - 1, the original formula = - 1 + 2 + 2 = 3
When k is the value, the polynomial X2 - (2k + 2) x + K2 + 5
Is it true that when k is a value, the algebraic expression is a complete square?
b²－4ac＝﹙2k＋2﹚²－4﹙k²＋5﹚＝0
8k－16＝0
k＝2
That is, when k = 2, the algebraic expression is a complete square expression
X2 + 6x + K2 is the complete square of a polynomial, which can be used to find the value of K
X2+6X+K2
=(x+k)^2
=x^2+k^2+2kx
6=2k
k=3
7823012345, lesson 5, No.56 bus, room 503?
Seventy-eight,two hundred and thirty,twelve thousand three hundred and forty-five,the fifth class,bus number fifty-six,room five hundred and three.
Waiting for the bus at the bus stop in a bookstore
in a book shop
wait for the bus at the bus stop
How to write both and one of them?
It must be translated with the phrases in the first volume of the seventh grade
both of them
each of them
I hope I can help you
What are English phrases and how to write them?
English phrases are phrases
Example: turn up
How to write the English phrase of care
It's best to answer in five minutes
take good care of sb
look after
What does OCC mean
Results: OCC bilingual dictionary results: OCC [English] ['&; k] [American] [' &; k] abbr.occupation If you have any questions about this answer, please ask if you are satisfied
A hotel room department has 60 rooms for tourists to live in. When the price of each room is 200 yuan per day, the room can be full. When the price of each room is increased by 10 yuan per day, there will be a room free. For a room with tourists, the hotel needs to pay 20 yuan per day for each room. Suppose the price of each room is increased by X yuan per day The functional relationship between the daily occupancy y (rooms) and X (yuan); (2) the functional relationship between the daily room charge P (yuan) and X (yuan); (3) the functional relationship between the daily profit w (yuan) and X (yuan) of the room department of the hotel; when the price of each room is how many yuan per day, w has the maximum value? What is the maximum value?
(1) From the question meaning: y = 60-x10 (2 points) (2) z = (200 + x) (60-x10) = - 110x2 + 40x + 12000 (3 points) (3) w = (200 + x) (60-x10) - 20 × (60-x10) (2 points) = - 110x2 + 42x + 10800 = - 110 (x-210) 2 + 15210. When x = 210, w has the maximum value. At this time, x + 200 = 410, that is to say, when the price of each room is 410 yuan per day, w has the maximum value, and the maximum value is 15210 yuan ．
RELATED INFORMATIONS
- 1. Given x2-x-1 = 0, the value of - X3 + 2x2 + 2004 is_____ .
- 2. Given x2-x-1 = 0, the value of - X3 + 2x2 + 2008 is?
- 3. If the quadratic polynomial x2 + 2kx-3k2 can be divided by X-1, then the value of K is______ ．
- 4. If the quadratic polynomial x ^ 2 + 2kx-3k can be divided by X-1, try to find the value of K Note: it's 3k, not 3K ^ 2
- 5. If the quadratic polynomial x2 + 2x + K can be divided by X-1, then the value of K is?
- 6. If the polynomial X - (A-1) x to the third power + 5 * x to the second power - (B + 3) X-1 does not contain the third power and X term of X, then what is the value of a + B Why B = - 2? What is the relationship between 1 - (B + 3) = 0 and 1 Why not B + 3 = 0
- 7. When a =? The polynomial (2-3a) x ^ 3-7ax ^ 2-x + 5 is a quadratic trinomial about X
- 8. On the polynomial (A-4) x3-xb + X-B of X is a quadratic trinomial, then a=______ ，b=______ ．
- 9. 3x2 + 4x-2x2-x + x2-3x-1, where x = 3 Combine the following polynomials and substitute them for evaluation
- 10. Given that the value of polynomial 3x2-4x + 6 is 9, then the value of polynomial x2 − 43x + 6 is () A. 7B. 9C. 12D. 18
- 11. A polynomial is added to the second power of 3x - the fourth power of 5x - 2x + 1 to get the second power of 3x-x
- 12. Factorization: X (x-1) (X-2) (x-3) - 24
- 13. Factorization of 4 * x ^ 2 * y ^ 2-6 * x ^ 2 * Y-2 * x * y
- 14. 1) Factorization of (x + y) ^ 2 - (x + y) ^ 3 2) (X-Y) ^ 2 - (X-Y) ^ 3 (X-Y) ^ 2 - (Y-X) ^ 3 Factorization 1) (x + y) ^ 2 - (x + y) ^ 3 2) (X-Y) ^ 2 - (X-Y) ^ 3 3 (X-Y) ^ 2 - (Y-X) ^ 3 4) 2 (X-Y) - 3 (Y-X) ^ 2 5) 4ab(a+b)^2-6a^2b(a+b) 6) (x+y)^2(x-y)+(x+y)(x-y)^2 7) 2a(a-3)^2-6a^2(3-a)+8a(a-3) 8) 24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xyz^3(z-x-y)
- 15. A factoring problem, ball process and answer 5X²z-20z-10px²+40p
- 16. Factorization: 2x4-x3-6x2-x + 2
- 17. Decompose the following formulas into factors: (1) the square of (a + b) - the square of 4 (a + b) C + 4C
- 18. Is f (x) = 1 and G (x) = x to the power of 0 the same function
- 19. LG2 = 0.3010, LG1 / 2
- 20. The big rectangle can be divided into three small rectangles of the same size. The perimeter of the big rectangle is 8 decimeters. What is the area of the big rectangle?