If the square of 2A + 2Ab + the square of B + 2A + 1 = 0, find the value of 2008 times of a multiplied by 2009 times of B Come on!

If the square of 2A + 2Ab + the square of B + 2A + 1 = 0, find the value of 2008 times of a multiplied by 2009 times of B Come on!

The square of 2A + 2Ab + the square of B + 2A + 1 = 0 2A ^ 2 + 2Ab + B ^ 2 + 2A + 1 = 0 a ^ 2 + 2Ab + B ^ 2 + A ^ 2 + 2A + 1 = 0 (a + b) ^ 2 + (a + 1) ^ 2 = 0, then a + B = a + 1 = 0, a = - 1, B = 1, so that the 2008 times of a multiplied by the 2009 times of B = (- 1) ^ 2008 * (1 ^ 2009) = 1 * 1 = 1

Square of (2a-1) + square of (B-9) = 0 to find the value of 2a-b
Right answer, plus points!!! Come on, come on, come on

Square of (2a-1) + square of (B-9) = 0
We know that the square of (2a-1) is 0
The square of (B-9) = 0
a=1/2 b=9
2a-b=-8

(a-b) square-2a-2b + 1

The original formula = (a-b) & # - 2 (a-b) + 1
=(a-b-1)²

It is known that the solution set of inequality X & # 178; - MX + 5 ≤ 0 on X is [(√ 6) - 1, (√ 6) + 1], and the value of M is obtained

It is concluded that √ 6-1 and √ 6 + 1 are two roots of the equation x & # 178; - MX + 5 = 0
From Veda's theorem, we can get √ 6-1 + √ 6 + 1 = M
We can get m = 2 √ 6

3 + 2,4 + 2,5 + 2,2 is how to express it on the calculator every time, without adding two

Add a couple of 2, you can directly enter 3 + 4 + 5 +, n * 2

Solving quadratic equation with one variable
A shopping mall sold a refrigerator with a purchase price of 2000 yuan at 2400 yuan, with an average of 8 refrigerators sold every day. In order to cooperate with the implementation of the national policy of "home appliances to the countryside", the shopping mall decided to take appropriate price reduction measures. The survey shows that for every 50 yuan reduction in the price of this refrigerator, an average of 4 more refrigerators can be sold every day
In order to make a profit of 4800 yuan per day in the sales of this kind of refrigerator, and at the same time make the people get benefits, how much should each refrigerator be reduced?
Explain and over weigh

The price of each refrigerator should be reduced by X Yuan
(2400-2000-x)(8+4x/50)=4800
The solution is: X1 = 100, X2 = 200
Because we want to benefit the people
We should take a larger price reduction
So x = 200
A: the price of each refrigerator should be reduced by 200 yuan

(2 * x ^ 1 / 3 - x ^ - 1 / 2) ^ 10 the term with the largest binomial coefficient?
Is it c (10,5)?

Yes
If n is even, CN (n / 2) is the largest
If n is odd, then CN [(n + 1) / 2] and CN [(n-1) / 2] are maximal
So it's the sixth term, which is C (10,5) * (2x ^ 1 / 3) ^ (10 + 1-6) * (- x ^ - 1 / 2) ^ (6-1) = - 8064x ^ (- 5 / 6)

AB (a-b)

Solution
ab²(a-b)/[a²b-ab²]
=ab²(a-b)/[ab(a-b)]
=b

How to calculate the square of quadratic equation of one variable (2x + 1) = 2 (2x + 1)?

(2x+1)^2-2(2x+1)=0
(2x+1)((2x+1-2)=0
(2x+1)(2x-1)=0
2x+1=0,2x-1=0
X = - 1 / 2, or x = 1 / 2

Solution equation: 13X × 2 = (100-x) × 24

13X×2=(100-X)×24
13x=1200-12x
13x+12x=1200
x=48