Some parts of the book are very interesting

Some parts of the book are very interesting

Some parts of the book are really interesting.

There is a column of numbers, according to a certain rule, which are - 1,2, - 4,8, - 16,32, - 64, ', in which the sum of three adjacent numbers is 1536. What are the three numbers?

X-2X+4X=1536,
So 3x = 1536,
So x = 512,
That is to say, the three numbers are 512, - 10242048

The fourth power of a + the square of 2A times the square of B + the fourth power of B
We just taught monomials, the teacher told us to write this. 555 do not understand

The coefficients are 1, 2, 1, the times are 4, 4, 4, and the number of items is 3 [coefficient is the constant in front of the letter, 1 can not be written, such as a, we did not write the times of 1a, which is the power of the letter, such as a, which is 2 times, a is the number of items of 3 times, which is simple, separated by the + - sign, you can find it by checking

3.3 solving linear equation of one variable (2) -- removing bracket and denominator

Remove brackets
transposition
Merge items in the same column
The coefficient is reduced to one

How to fill in a row of 9 5 4 8 1, two rows of 8 9 6 3 1, three rows of 7 5 2 3 question marks?

The first row adds up to 27, and the second row adds up to 27
Then the third row is 27, so the question mark is 10

What is the product of all integers with absolute values greater than 3.7 and less than 6?
If - XYZ > 0, x, y are different signs, then Z is greater than or less than 0?
If a · B · C > 0 ACC is known, what is the correct conclusion?
A a0 b>0 c>0
C a>0 b

(1) The product of ± 4 and ± 5 is 400
(2) Z is greater than 0
(3) c
(4) N (n + 1) is equal to the square of N plus n
Change the original formula to 1 + 2 + n+1^2+2^2+3^2+…… +n^2

What's the answer to the second question on page 36 of volume one of the synchronous training in the new mathematics class of grade five of Beijing Normal University Edition?

(x+0.6)x3=72
3x=72-0.6
3x=6.6
X = 6.6 divided by 3
x=2.2

The problem of putting apples in the box
How to answer questions like this? With examples, and with examples

Profit and loss
(profit + loss) △ the difference between the two distributions = the number of shares participating in the distribution
(big profit - small profit) △ the difference between the two distributions = the number of shares participating in the distribution
(big loss - small loss) △ the difference between the two distributions = the number of shares participating in the distribution

How many square meters is 20000 square decimeters equal to
kuai

200 square meters

1. Practical questions
1. On a map with a scale of 1:8000000, the distance between a and B is 4.5cm. How long does it take for a car to reach B at the speed of 40km / h?
2. On the map with scale of 1:3000000, the distance between the two places measured is 10cm. A and B go from two places at the same time and meet each other in three hours. It is known that the speed ratio of a and B is 2:3, so the speed of a and B is calculated
Using the unknown x

1, distance = 4.5 * 8000000 / (100 * 1000) = 360 km
Time = 360 / 40 = 9 hours
2, distance = 10 * 3000000 / (100 * 1000) = 300km
Speed sum = 300 / 3 = 100 km / h
A's speed = 100 * 2 / (2 + 3) = 40 km / h
B's speed = 100 * 3 / (2 + 3) = 60 km / h