Please tell me how to do math, what formula, what 7788. 5

The formula is better to push it yourself....Also, do more questions...It's not a sea of questions tactic....Rather, all kinds of types are done....There is no give, no gain....The right effort will also get twice the result with half the effort.

Math is not about rote memorization, but about understanding.

Your known conditions are:

Effort = Review.

Playfulness = no review.

After learning, I forgot everything as soon as I played.

From the fact that after learning, you forget everything as soon as you play: hard work = playfulness.

Whereas, by effort = review.

Playfulness = no review.

It can be seen that hard work is not the same as playfulness.

So these three conditions are contradictory, and your conclusion is wrong.

1) Mark f(x) = f(x) -x = (x-x1) (x-x2) f(x) open parabola, f(x) and x1, x2, the two nodes of the x-axis when the 0, f(x) of x

f(x) = [f(x)+ x-x1 + x1= [(x-x1)(x-x2)+(x-x1)] x1=(x-x1)(x-x2 +1 year) + x1 br > again a-x2> 0

a(x-x1)(x-x2 +1 a)<0So, the function f(x) is x< f(x) < x1(2) as well.

People = Eat + Sleep + Go to Work + Play.

Pig = Eat + Sleep, Man = Pig + Go to Work + Play, Man - Play = Pig + Work, People Who Don't Play = Pig Who Can Go to Work.

Man = Eat + Sleep + Earn Money, Male.

Man = pig + earning money, man - earning money = pig.

Conclusion: Men who don't earn money are equal to pigs.

Woman = Eat + Sleep + Spend Money, Woman = Pig + Spend Money, Woman - Spend Money = Pig, Conclusion: Woman Doesn't Spend Money Equals Pig.

9……Infinitesimal decimals are reduced to finite decimals.

Let n = 9......Type 1.

10n= 9……Type 2.

Subtracting formula 1 from formula 2 gives 10n-n = 9...... 9……9n = 9

Get n = 1

Get 9 ......When reduced to a finite decimal, the result is 1

If you don't review after reviewing, it's 0 in the first place, needless to say.

After studying, I forgot everything as soon as I played, and I worked hard to play=0 Review No review=0 Shift. Review = effort.

Commonly used mathematical formulas:1. The area of the rectangle is long and wide, and the calculation formula is s=ab.

2. The area of the square is the length of the side and the length of the side, which is calculated by the formula s=a a=a2.

3. The circumference of the rectangle (length and width) 2, the calculation formula c=(a+b) 2.

4. The circumference of the square is 4, and the calculation formula is c=4a.

5. The area of the parallelogram is the height of the bottom of the cavity, and the calculation formula is s=ah.

6. The area of the triangle is 2 at the bottom, and the formula is s=a h 2.

7. The trapezoidal area (upper and lower bottom) is 2, and the calculation formula is s=(a+b) h 2.

8. The volume of the cuboid is length, width and height, and the calculation formula is v=abh.

9. The area of the circle Pi radius squared, calculated by the formula v= r2.

10. The volume of the cube is the length of the edge, the length of the edge, the length of the edge, and the calculation formula v=a3.

11. The volume of the cuboid and the cube can be written as the base area is high, and the calculation formula is v=sh.

12. The volume and bottom area of the cylinder are high, and the calculation formula is v=sh.

13. The number of copies of each copy The total number of copies The number of copies The number of copies The number of copies The number of copies The number of copies of the total number of copies.

Multiples Multiples Multiples 1 Multiples Multiples Multiples 1 Multiples.

15. Speed Time Distance Speed Time Distance Time Speed.

16. Unit price, quantity, total price, unit price, total quantity, total price, quantity, unit price.

17. Work efficiency Working hours Total work efficiency Total working hours Total working hours Working hours Work efficiency.

18. Add the number of additions and and add one addition to the other.

19. Subtracted subtraction difference is dismantled and rounded subtraction difference subtraction difference subtraction subtraction.

20. Factor Factor Product One Factor Another Factor.

21. Dividend, divisor, divisor.

Rectangle circumference with acacia empty length: (length + width blindness) *2

Rectangle area: length * width.

Parallelogram area: base * height.

Triangle area: base * height 2

Circumference of the circle: straight diameter * pi.

Rectangle volume: length * width * height.

The formula for the height of water is: h=p (high command g), where h is the height of the water, p is the pressure of the water, the density of the water, and g is the acceleration of gravity.

9 a 2 dec c 2 a ac

A 2 10 2 C 2 a 3 ac

a, x, b) 2, a, 3ac

9 a 2 dec c 2 a ac

A 2 a 2 ac ten c 2 ten ac

a-c) 2 ac

a+c)^2=a^2+c^2+2ac

So (a+c) 2-3ac=a 2+c 2+2ac-3ac=a 2+c 2-ac

I remember it was a formula.

The simplification process is as follows:

a^2+c^2-ac

a^2+c^2+2ac-3ac

a^2+2ac+c^2)-3ac

a+c)^2-3ac

So, 9=(a+c) 2-3ac

Clothoid, also known as Euler spiral.