If the coefficients of two monomials are the same, the letters are the same, the times of the same letters are the same, and the times of the same letters are the same, If [- 5A ^ (M + 1) B ^ (2n-1)] (2a ^ n · B ^ m) = - 10A ^ (n + 2) B ^ 4

If the coefficients of two monomials are the same, the letters are the same, the times of the same letters are the same, and the times of the same letters are the same, If [- 5A ^ (M + 1) B ^ (2n-1)] (2a ^ n · B ^ m) = - 10A ^ (n + 2) B ^ 4

From the meaning of the title,
m+1+n=n+2
2n-1+m=4
The solution is m = 1, n = 2
So m = 1, n = 2
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Xiao Ming said, "two monomials have the same number of times and contain the same letters. They are of the same kind." do you think Xiao Ming's statement is right? If not, please give an example

Incorrect. - 3xy2 and 3x2y satisfy two monomials of the same degree and contain the same letters, but they are not of the same kind

If the monomials 3a3b2x and 13a3b4x-2 are of the same kind, then x=______ ．

From the meaning of the question, we can see that 2x = 4x-2, transfer items, merge similar items, get - 2x = - 2, coefficient is 1, get x = 1

We should have a clear attitude towards learning and correct the purpose of learning

We should correct our attitude towards learning and make clear the purpose of learning

1988 is a leap year, and the following three leap years are: ()

1988 is a leap year. The following three leap years are: (1992) (1996) (2000)

Why is 3 times 1 / 3 equal to one, but 3 times 0.3333333 equals 0.9999999

Because one third is not equal to 0.333333333333333333333333, that is approximate, and 0.33333333333333 is the exact value, so it is 0.9999999999999999

Xiaoming and Xiaogang are 900 meters away from their home. They start from home at the same time and face each other. Five minutes later, they meet. Xiaogang walks 80 meters every minute, and how many meters does Xiaoming walk every minute?
It's best to use equation

Calibration speed = 900 △ 5-80 = 180-80 = 100 m / min;
If the small rigid speed is x m / min, there will be;
(x+80)×5=900;
x+80=180;
x=100;
So the speed of Xiaogang is 100 m / min

Translation from English to Chinese (BA Shang 25,26)
May one day we can work in Beijing, sleep in Kunming and visit the moon for a holiday!

Maybe one day, we will work in Beijing, sleep in Kunming and visit the moon during our holidays
But the biggest football match in their city will start at four o'clock in the afternoon

When the gardener uses the scissors as shown in the figure to trim the branches, he often puts the branches as close as possible to the scissors axis O. The purpose of doing this is to ()
A. Increase the resistance arm, reduce the distance of power movement B. reduce the power arm, reduce the distance of power movement C. increase the power arm, save effort D. reduce the resistance arm, save effort

If the branch is close to the scissor axis as far as possible, the resistance arm L2 will be reduced, while the power arm L1 and resistance F2 will remain unchanged, ∵ f1l1 = f2l2, ∵ F1 = f2l2l1 will become smaller, that is, labor saving

The sum of the edges of a cuboid is 96 cm in length, 12 cm in length, 8 cm in width and () cm in height

The sum of the edges of a cuboid is 96 cm in length, 12 cm in length, 8 cm in width and (4) cm in height
Sum of edge length = 4 * (length + width + height)