If the cube of 27x / 4-2 = 0, then x =?

Cube of 27x-4-2 = 0
Quarter 27x ^ 3 = 2
x^3=8/27
x=2/3

How to do cube = - 8 of (2x-1)

(2x-1)^3=(-2)^3
2x-1=-2
2x=-1
x=-1/2

1 / 2 (2x-1) cube = - 4
Square of (3x + 2) = 16
1 / 2 (2x-1) cube = - 4

Square of (3x + 2) = 16
3x+2=+ -4
3x = 2 or - 6
X = 2 / 3, or - 2
1 / 2 (2x-1) cube = - 4
(2x-1)^3=-8
2x-1=-2
x=-1/2

A rectangular playground is 60 meters long and 40 meters wide. How long and how wide should it be drawn on a 1:2000 scale drawing? Please draw below and find out the area of the rectangle on the drawing

Because 60m = 6000 cm, 40m = 4000 cm, then 6000 × 12000 = 3 (CM), 4000 × 12000 = 2 (CM), so the plan of the playground is as follows:; the area on the map is 3 × 2 = 6 (square cm); a: the area of the rectangle on the drawing is 6 square cm

The story of a mathematician is about 100 words
It's used to copy newspapers by hand,

Let's see if there is a suitable one

Mathematical problems (2 is square, 3 is cubic, 4 is quartic)
1,（X②－2X）②－1＝＿＿＿＿＿＿．2,1－（X②－2XY＋Y②②＝＿＿＿＿＿＿．3,（X②－4）②＋6（4－X②）＋9＝＿＿＿＿＿＿．4,16A④－72A②＋81＝＿＿＿＿＿＿．5,（X＋3Y）②－（10X＋30Y）＋25＝＿＿＿＿＿＿．6, Factorization: a 2 + B 2 + C 2-2ac-2bc-2ab = 0.7, factorization: a 2 + B 2 + C 2-ab-ac-bc = 0.8, it is known that x + Y-2 is a factor of x 2 + axy + by 2-5y + y + 6, find the value of a and B. 9, whether there is a solution of equation x 3-2x + 1 as 1, then the algebraic formula x 3-2x + 1 can be decomposed into a factor of 0, If 9x 2 + MXY + 16y 2 is a complete square formula, M = 11, if polynomial x 2-x + Q can be decomposed into (x + 3) (x-m), then q =, M = 12, decomposition factor: 9x 2-4y 2 =

1. (x²-2x)²-1=(x²-2x+1)(x²-2x-1)=(x-1)²(x²-2x-1)
2. 1-(x²-2xy+y²)²
=[1+x²-2xy+y²][1-(x²-2xy+y²)]
=(1+x²-2xy+y²)[1-(x-y)²]
=(1+x²-2xy+y²)(1+x-y)(1-x+y)
3. (x²-4)²+6(4-x²)+9
=(x²-4)²-6(x²-4)+9
=(x²-4-3)²
=(X & sup2; - 7) & sup2; (if you don't learn real numbers, that's the end)
=(x+√7)²(x-√7)²
4. 16A^4-72A²+81
=(4A²)²-2×4×9A²+9²
=(4A²-9)²
=(2A+3)²(2A-3)²
5. (x+3y)²-(10x+30y)+25
=(x+3y)²-10(x+3y)+25
=(x+3y-5)²
6. A²+B²+C²-2AC-2BC-2AB

How to divide an isosceles trapezoid into four equal in shape and size?
Condition: the upper sole is equal to the two waists, and the lower sole is equal to twice the upper sole

As shown in the picture

Money has time, who can give some examples of life? Note the example of life Zhang
Yes, it has the time value of money

There is something wrong with your question. Money should have time value! In short, today's 100 yuan is different from 100 yuan a year later. The simplest way is to deposit 100 yuan in the bank. Assuming that the one-year interest rate is 3%, we can get 103 yuan a year later. This is the so-called time value of money. In financial management, we often use terminal value and present value to distinguish them

Help me to solve the math problem: 2x square - 4x + 1 = 0 (using the formula method)

Change to x ^ 2-2x + 1 / 2 = 0
x^2-2x+1-1+1/2=0
（x-1)^2= 1/2
X = positive and negative half root sign 2 + 1

Given that vector a + vector b = 3 vector C, where vector C is a non-zero vector, is vector a parallel to vector B? Please give us the reason
9 words to give you: to process, faster, today~

Not necessarily. Obviously, if ABC is in the same direction, if not, consider three sides of a triangle, let one be a, the other be B, and one third of the third side be c. then the equation satisfies, but at this time, AB is obviously not parallel

If the cube of 27x / 4-2 = 0, then x =?