Important inequalities in high school mathematics Why a ^ + B ^ > = 2Ab?

Important inequalities in high school mathematics Why a ^ + B ^ > = 2Ab?

Because (a-b) square > = 0, so a plus b-2ab > = 0, so. Understand?
a^+b^-2ab = (a-b)^ >= 0
Methods of memorizing English words
It's true that it's hard for Chinese to memorize words when they learn English. In the absence of language environment, it's hard to memorize words today, but it's hard to forget tomorrow. My junior high school English teacher once taught inductive memory, but to put it bluntly, he still rote it. For example, apple, pear, banana, peaches are all fruits
Is there any way to make Chinese people learn English as well as British people? As long as the bottleneck of word memory is broken through, other grammar will be solved
First of all, we should have a concept that memorizing words is not just a purely passive memory. If we want to remember them firmly, we need to practice and apply them frequently, so that words will become your own things and not easy to forget. Personally, I prefer to use root affixes memory method and derivative memory method. Learning this method well will also help us to recognize and guess new words in reading, Auditorium, - orium is a noun suffix, which means a place to listen, so this word means a place to listen, so it has the meaning of auditorium, lecture hall, auditorium and so on, It's very convenient to use these two methods to memorize pain root words together. It's also recommended that you use Jiang Zheng's "the secret of English vocabulary" to memorize words, which is a good book for junior high school English learners
(please understand if the answer is not good. If you are satisfied, please take it as the best answer.) thank you
Who knows how to memorize English words
I'm an English teacher. Frankly speaking, the so-called memory methods are all the experience that I summed up in the process of memorizing words. If you have memorized about 6000 positive words, I believe that you must have your own good methods of memorizing words! My idea is to memorize at least 3000 words first, and then talk about the methods. I believe you can do it!
What mathematical unit is this?
μ g / m3 (mg / m3 for CO)
What's the unit and how many ppm
This is the unit of density, 0.001 ppm
Interested to challenge, and tell the method
1*2*3*4*5*6…… *How to know how many "zeros" are there in the final result without calculation?
It is suggested that the multiplication of 5 and even number is 0
Before using the method of calculation, I didn't answer it anyway
There are 5 and 15, multiplied by even numbers, and there are two zeros
10 and 20, multiplied by any number, have two zeros
The last four zeros
Mathematical unit
8.6 cubic decimeter = cubic centimeter
3.5 m3 = cubic decimeter
4520 cubic decimeter = cubic meter
3 cubic decimeter 50 cubic centimeter = cubic centimeter
1.6 L = ml
50 ml = liter
15 l = cubic decimeter
73 ml = CC
8800 CC = liter
3.6m3 = cubic decimeter
5.16 cubic decimeter = cubic decimeter cubic centimeter
830 L = cubic decimeter = cubic meter?
8.6 cubic decimeter = 8600 cubic centimeter 3.5 cubic meter = 3500 cubic decimeter 4520 cubic decimeter = 4.52 cubic meter 3 cubic decimeter 50 cubic centimeter = 3050 cubic centimeter 1.6 liter = 1600 milliliter 50 milliliter = 0.05 liter 15 liter = 15 cubic decimeter 73 milliliter = 73 cubic centimeter 8800 cubic centimeter = 8.8 liter 3.6 cubic meter
Several legendary math problems in grade four!
1. Ingenious calculation method of 98x25 (recursive equation)
2. Application: A and B trains run from a and B at the same time. Train a runs 50 kilometers per hour, while train B runs 60 kilometers per hour. After 120 minutes, they meet. How many kilometers is the distance between a and B?
1. 98 × 25=(100-2)× 25=2500-50=2450
2. 120 minutes = 2 hours
The distance between AB and ab is (50 + 60) × 2 = 110 × 2 = 220 km
What does the mathematical unit h mean
Hours, e.g. km / h km / h
What's the meaning of 1 + 2 = 2 + 1 in the fourth grade math problem
Represents the addition of two numbers, the exchange of addend position, and unchanged
This is to illustrate the law of additive commutation
Additive commutative law
The law of addition fit combination
The commutative law of addition~
Represents the addition of two numbers, the exchange of addend position, and unchanged
Hope to help you_ ∩)o...
What does unit length mean in mathematics
Unit length can be understood as each unit of length
If the unit in the title is m, what is the length of the unit, it can be considered as per M