The second power of [x's power-1] multiplied by the second-n power of [x's power] multiplied by [- X's power-n]

The second power of [x's power-1] multiplied by the second-n power of [x's power] multiplied by [- X's power-n]

If the n-th power of (x's Square) = the square of x times the n-th power of X, we can find the value of N -- if there are additional points, there are
For example: if the n-th power of (x's Square) = the square of x times the n-th power of X, how to find the value of N?
Please answer on the day you ask,

(x ^ 2) ^ n = x ^ 2 × (multiply) x ^ n
x^2n=x^(2+n)
∴2n=2+n
∴n=2
[algorithm of the same base power]

The perimeter of a rectangle is 24 cm. Three of these rectangles can make a square. How many cm is the perimeter of the square?

36 cm
If the length is three times the width, then the width = 24 / (2x4) = 3; the length = 3x3 = 9
A square is equivalent to six short sides + two long sides = 3x6 + 2x9 = 36
Or equivalent to four long sides, i.e. perimeter = 4x9 = 36

There are 10 cylindrical columns, whose bottom circumference is 6.28 meters and height is 8 meters. The surface of these columns is painted with an average of 0.5 kg per square meter, which takes several thousand grams

Bottom radius = 6.28 △ 3.14 △ 2 = 1m
Area = 1 × 1 × 3.14 × 8 × 10 = 251.2 square meters
Mass = 251.2 × 0.5 = 125.6kg

4 = 2 add the operation symbol to make the equation hold [bracket + - △ x is OK]

4÷4+4÷4=2
4-（4+4）÷4=2
4÷[（4+4）÷4]=2
4×4÷（4+4）=2

Calculation by operation law: 1 / x + y + Z * (1 / x + 1 / y + 1 / z) × 1 / XY + YZ + ZX * 1 / XY + 1 / YZ + 1 / ZX

There may be some problems in your expression, do you want to ask: [(1 / (x + y + Z)] (1 / x + 1 / y + 1 / z) [1 / (XY + YZ + ZX)] [1 / (XY) + 1 / (YZ) + 1 / (ZX)]? If so, the method is as follows: ∵ 1 / x + 1 / y + 1 / z = (YZ + ZX + XY) / (XYZ), ∵ (1 / x + 1 / y + 1 / z)

If the opposite number of A-3 is two and one third, find the opposite number and reciprocal of A

The opposite number of A-3 = 3-A
3-a=7/3
a=3-7/3
a=-2/3
The opposite number of a = 2 / 3
Reciprocal of a = - 3 / 2

How to add, subtract, multiply and divide four sixes equal 11
6()6()6()6=11
Add "+" - "*" / "in brackets
6（）6（）6（）6=2

6(+)6(-)6(/)6=11
6（/）6（+）6（/）6=2

Given the functions Y1 = 2x + 1 and y2 = - X-1 (1), please draw the images of these two functions in the same coordinate system
(2) The intersection coordinates of the two function images are obtained
(3) Observe the image and answer when x is Y2 > Y1

1. Y1 = 2x + 1 line of image passing through point (0,1) and point (1,3)
Y2 = - X-1 the line of an image passing through a point (0, - 1) and a point (- 1,0)
2. Get the intersection coordinates of these two function images
y=2x+1
Y = - X-1, x = - 2 / 3, y = - 1 / 3
3..y2>y1
-x-1>2x+1 x

The surface area of a cube wood block is 96 square centimeters. If you saw it into eight small cubes of equal volume, you need to block them (as shown in the figure), and the surface area of each small cube is______ Square centimeter

96 △ 6 × 14 × 6, = 16 × 14 × 6, = 24 (square centimeter), answer: the surface area of each small cube is 24 square centimeter