The 2m-1 power of (a-b) &; (the 2m power of B-A) &; (the 2m + 1 power of a-b), where M = a positive integer

B-A = A-B

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1. If M is a positive integer, the degree of multiplication of m power of polynomial 2x by y plus m + 2 power of 2Y minus m + 3 power of 3 is ()A m+3 B m+2 C m+1 D m
2. A polynomial minus x3-2y3 equals X3 + Y3, then the polynomial is___ ．
3. The m power of 2x minus the M + power of 2Y plus 7 times x times m + 1 minus the m power of y plus 1 minus the m power of 3 times x minus the m power of 2Y
4. If the m-th power - (n-1) x + 1 of the polynomial 3x is a quadratic binomial of X, the value of M and N can be obtained As long as the answer. You have to explain under the line. Will be chasing points
5. M3 + 27Mn + N3 = 729, m and N are positive integers, M + n is greater than Mn, then M + n = () I want to go over Chen
6. Given that the square of M = 2n + 4, the square of (2n) is m + 1, evaluate: (1) m + 2n; (2) the third power of 4N - the square of Mn + 2n Evaluation can only have numbers
7. If there is no x ^ 2 term in the square plus x plus K ^ 2x ^ 2-5 of the polynomial 3x to the third power-4x, then the value of K is
8. It is known that the quadratic power of m-2 + MX-3 of polynomial (m-2) x is about the quadratic trinomial of X It is known that the square-2 + MX-3 of the polynomial (m-2) XM is a quadratic trinomial of X, and the value of M is obtained.
9. If the third power of polynomial-5 of X - (2m-1) the second power of X + (2-3n) X-1 does not contain the quadratic term and the first term, the value of M, n is obtained As fast as the title
10. 3 to the power of 2012 minus 3 to the power of 2013 to the power of 211
11. When a = - 1, M is a positive integer, the 2m + 1 power of (- a)=___
12. Given x + X - 1 = m, find the value of x 2 + X - 2
13. Find the maximum and minimum values of the function f (x) = 1 / 3 x to the third power - 21x square + 1 in the interval [- 1,4]
14. The density of human body is similar to that of water, and the mass of a normal adult is about 10______ Kg, its volume is about______ M 3
15. The density of human body is similar to that of water. The mass of a middle school student is about 50kg, and its volume is______ M3, the gravity is______ N．
16. The quality as like as two peas of basketball star Yao Ming is 140kg, and the density of human body is roughly the same as that of water. In Shanghai, the Tussauds Wax Museum has a solid wax figure identical to that made from paraffin wax. At least how much kg paraffin wax is needed? (known paraffin density of =0.9 * 10 3 times kg/ cubic meters).
17. Yao Ming is 229cm in height and 140kg in weight. The average density of his wax figure is 0.9 times 10 times 3 kg / m3. The density of human body is about equal to that of water Please, what's the quality of Yao Ming's wax figure?
18. The third power PA of pressure 6 * 10 at 50cm depth of a liquid is used to calculate the liquid density (G is 10N / kg)
19. The weight of an elephant is 5000kg, and the area of each foot is about 600cm square. How much pressure does the elephant put on the ground when standing on four feet? (process)
20. An elephant weighs 600 kg. The contact area between the foot and the ground is 600 square centimeters. How much pressure does the elephant exert on the ground when it stands on the ground with four feet? How much pressure does the elephant put on the ground when raising its feet