Math Question Please give me the answer today...

If two non-negative formulas add to zero, then they are zeros, so: |x*x-4|=0y*y-5y+6=0 So x=plus or minus 2 because it's a practical problem, so let's get rid of minus 2 in the same way y=2 or 3

According to the Pythagorean theorem, the third side is a double root number two or a root number thirteen.

a>=2006, so 2005-a<0

2005-a｜+√a-2006）=a-2005+√（a-2006）=a

So (a-2006)=2005

i.e. a = 2005 + 2006

So a-2005 = 2006

2) a>=2006, so 2005-a<0

2005-a｜+√a-2006）=a-2005+√（a-2006）=a

So (a-2006)=2005

i.e. a=2005 +2006=-(c-2007) bEquation is not there???

, y=2 or y3

So the third side is calculated based on the right triangle.

The title is not clear, is it two right-angled sides or something else?

The third side is 2 2 or 13 or 5

a-2005²=2006

Question 3: There is no B, huh?

1) The answer is 2 2 or 11 or 5

3) The answer is 2006

2) The title is wrong, where is B???

There are x fish in total.

The number of pieces taken by the first kitten is (x-1) 4

At this time, the number of remaining pieces is x-1-(x-1) 4=3(x-1) 4, and the number of pieces taken by the second kitten is [3(x-1) 4-1] 4, and the number of remaining pieces is 3(x-1) 4-1-[3(x-1) 4-1] 4=3[3(x-1) 4-1] 4

There are 6 more fish at this time, ie.

3[3（x-1）/4-1]/4=6

Solve x=13

Solution: Suppose three kittens caught x fish together.

x-1）*75%-1]*75%=6

Get: x=13

A: The three kittens caught a total of 13 fish.

Notebook unit price: (220-40) 90 = 2 yuan.

Unit price of fountain pen: 2 + 1 = 3 yuan.

If each notebook is X yuan, then each pen is X + 1 yuan.

40（x+1)+50x=220

90x=180

x=2 yuan. x+1=3 yuan.

A: 2 yuan per notebook and 3 yuan per pen.

﹙220－1×40﹚÷﹙40＋50﹚＝2

Each pen costs 3 yuan, and the price of each notebook is 2 yuan.

Oral arithmetic: First remove the expensive money of the fountain pen from 220: 220-40 180

The rest of the money can be spread among the 90 pens: 2 yuan each.

So the notebook is 2 yuan, and the pen is 3 yuan.

It's good to use a one-dimensional equation.

Let's set the price of each notebook at $x.

The price of each fountain pen is (x+1) yuan.

The equation is derived from the question:

40（x+1）+50x=220

The solution is x=2x+1=2+1=3 (yuan).

A: The price of each notebook is 2 yuan.

The price of each pen is 3 yuan.

Set the fountain pen x yuan.

then 40x (x 1)50 220

x 3 pens 3 yuan, notebook 2 yuan.

If each notebook is X yuan, then each pen is X + 1 yuan.

40（x+1)+50x=220

90x=180

x=2 yuan. x+1=3 yuan.

Set a notebook x yuan, and a pen x 1 yuan! 50x 40(x 1)=220…90x=180

The square of the root number m minus the root number m = m-2 + 1 m = 4

Over a as ah bp in h, even ch

Ah Planar BCDP

In RT ABH 3sinx, BH 3cosx in BHC CH2(3cosx) 2 4 2 2 4 3cosx*cosx(90°X).

In RT ACH, AC2 25 12sin2xx at 45° has the smallest AC length.

I don't think that kind of problem will happen in math! Are you missing brackets? (x-13)/(-5+4)=7 x=6

8x+9|<7 >7<8x+9<7 =>22, i.e.: ax 2+bx-4>0

The solution set is also as follows: -2 then a<0, and the two roots of ax 2+bx-4 0 know that the orange is x=-2, x=-1 4

Substituting: a=-8, b=-18

Isosceles triangle! Waist a=b, c is the bottom edge of the open mass.

3.Let's take last year's output value as A, 5 years later:

4.I don't understand what Meng Bi meant.

1、a=-8 b=-18

The following topic is not clear, please write clearly!

As he said, a total of 2 + 3 + 4 = 9 knives were cut by adding two surfaces to one cut, that is, 9 * 2 = 18 surfaces were added plus the original eight faces, total; 26 Faces If you really don't understand, you can draw a cube and look at it.

The original cube had 6 large faces. Cut it into 3 slices horizontally, and it is two knives that add 4 large sides. (The area of each large surface is the area of one face of the original cube) Each piece is sawn into 4 strips according to any size, and the three knives add 6 large faces, each strip is sawn into 5 small pieces according to any size, and the four knives add 8 large surfaces, so the sum of the surface areas of 60 of these small cuboids is a total of 6 + 4 + 6 + 8 = 24 large surfaces (each large surface area is 1 square meter.

So the sum of the surface areas of these cuboids is 24 square meters.

Let the original x people, 200 + (20 + x) * (200 x) * (1 + 20%) * 10-1-3) = 2000 get But the solution doesn't seem to be an integer Oh I'll help you solve it, just one wrong step to get x=80