My mother said to me, "I'm going on a business trip tomorrow, so you have to take care of yourself these days."

Now it's imperative. After it's declarative, it should be related, not three clauses
My mother told me that I have to take care of myself these days because she is going on a business trip tomorrow
As a modal particle, it is necessary to delete it when the imperative sentence changes to the declarative sentence, because the subject of the speech changes and the modal particle of the original subject case can no longer be used

Amanda said to Dad, "no matter what happens, I know you'll always be with me."!

Amanda said that no matter what happened, he knew Dad would always be with him

Given the equation x ^ 2 + 2aX + 5A + 6 = 0 about X, if the two equations have different signs, and the positive root minus 4 is greater than the absolute value of the negative root, find a to get the value range

Let the two roots of the equation be X1 and X2 respectively
So X1 * x2

My father and I wrote 400 words
We need to be specific about one thing
Actually, I don't have too many five years

Grass green, grass fragrance, home is the best harbor
Most of the time, people will say that only mother is good in the world, and I agree with that, but my father is also a tall image in my heart forever
Dad always has no regrets. Sometimes when he is tired, he seldom complains. He just likes to use wine to relax himself. I often see this scene: after drinking, Dad curls up on the sofa and falls asleep. The things on the table are not cleaned up, so I have to do these jobs
I want to say that my father is different from others. Every time I am sick, I dare not tell him, because he is not like the father of other children. When the child is sick, he will be very worried and worried. But my father will scold me, saying that I don't take good care of myself all day, and that I don't listen to wearing more clothes Sometimes I have to insist on going to class when I'm sick. Sometimes, I feel aggrieved. Why do I blame my father for not caring when I'm sick? However, after a long time, I won't feel aggrieved and blame my father
I still remember when I was a child, when I was still in primary school, my first task must be to study well. Where do I know? Whenever I have a holiday, my father will accompany me to do my homework, so I can be regarded as the top of the class
Me: Dad, it's the final exam. I don't know if it's too late?
Dad: if you work hard, you will have time. Just read it carefully
Me: Well
Every night I would ask this question again and again, but Dad would not feel impatient
I don't know if there are many things that shouldn't happen in this family. I've laughed happily and cried sadly. I remember that I was sensible long ago, and it's easy to be satisfied. Even if someone wanted to give me something for free, I would not want it. Slowly, I became introverted. (some people can laugh, how can I see you and chat with others? A: I don't understand, Why are you in such a mood when chatting
Dad let me understand a lot of things, I grew up under the "discipline" of my father, when I was not obedient, I would fight (remember that slap Good red, good pain, good acid). When I heard about it, those who should be praised would also be praised (I still remember when my father's thumb stood up for me, I felt happy)
This is my father, my dear father, no matter how many times I was disciplined, I will not blame him, because He is my father

If the real number A-B satisfies a ^ 3 + B ^ 3 + 3AB = 1, how much is a + B = 1

a^3+b^3+3ab=1
(a+b)(a^2-ab+b^2)+3ab=1
(a+b)[(a+b)^2-3ab]+3ab=1
(a+b)^3-3ab(a+b-1)=1
(a+b)^3-1=3ab(a+b-1)
(a+b-1)[(a+b)^2+(a+b)+1]=3ab(a+b-1)
a+b=1

Solution equation (x-1) * 15 = (x-1) * 17

（x-1)*15=(x-1)*17
15x-15=17x-17
2x=2
x=1

What is the formula for the surface area and volume of a square?

Cube, cube has volume and surface area
The surface area of cube s = side length * side length * 6 = the square of side length 6
Volume of cube v = side length * side length * side length = cube of side length

Cos (A-wu / 4) = root 2 / 10 a belongs to (Wu / 2, Wu) find (1) cosa Sina (2) cos (2a + Wu / 3)
It's the root of ten two

Because a ∈ (π / 2, π), then cosa Sina

Solution equation: 4x ^ 2 / 12 + 1 = - 1-2x / 2x + 3

12/4x^2+1=-1-(2x+3)/2x
Multiply 4x ^ 2 at the same time to get
12+4x^2=-4x^2-2x(2x+3)
12+4x^2=-4x^2-4x^2-6x
12+4x^2=-8x^2-6x
12+4x^2+8x^2+6x=0
12x^2+6x+12=0
2x^2+x+2=0
∵△=1-4×2×2=-15＜0
The original equation has no solution

The graph of quadratic function y = 2 / 3x square is shown in the right figure. Point A0 is at the origin of coordinates, A1, A2, A3 , A2008 on the positive half axis of y-axis, B1, B2, B3 If triangle a0b1a1, triangle a1b2a2, triangle a2b3a3 , triangle a2007b2008a2008 are equilateral triangles, calculate the side length of triangle a0b1a1 = ---, the side length of triangle a1b2a2 = ---, the side length of triangle a2007b2008a2008=--------------

Let the length of the side be M. in any equilateral triangle line, the relationship between AI and the edge tension is as follows:
In this case, the high position ((root 3) / 2) m is y = (m ^ 2) / 2 of the point whose height is y = 2 / 3x & # 178
AI coordinate is (0, m (m-1) / 2)
The first point can be found out (0,1), and the length of the next triangle side is 2
The last is 2010

My mother said to me, "I'm going on a business trip tomorrow, so you have to take care of yourself these days."