A math problem that I can t see clearly in the question just now, and do it again

Original = x(x-1 2)(x+1 2) 1 2x-(x-1 2) (x+1 2).

x+1 2) [x(x-1 2)-(x-1 2)] 1 2x(x+1 2) (x-1 2)【x-(x-1 2)-1 2x(x+1 2)(x-1 2)(x+1 2)(1 2)-1 2x(x -1 4)(1 2x+1 4)-1 2x1 2x +1 4x -1 8x-1 16-1 2x1 2x +1 4x -5 8x-1 16 Let's say this is a calculation......Probably right......I'm not convinced of ...... myself

Mention the common factor and then simplify it.

square kilometers = 2,500,000 square meters.

Square kilometers: 4 square meters = 2,500,000 square meters: 4 square meters = 625,000: 1 hour = minutes. 42 points: hour = 42 points: 168 points = 1: 4x = 3

x = 41 - 5 out of 8 x = 1 out of 3

1-5x/8=1/3

5x/8=1-1/3

5x/8=2/3

x=2/3÷5/8

x=16/15

x = 1 and 1/15, 1 (x + 2/3) = 4/5

x+2/3=1÷4/5

x+2/3=5/4

x=5/4-2/3

x=7/12

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Simplification ratio:

Equinox km: 4 square meters = 2,500,000 square meters: 4 square meters = 625,000:1

42 points: hour = 42 points: 168 points = 1:4

Find the unknown number (solution x can be used, or it can be calculated according to: divisor divided by divisor equals quotient) x=4

1-8/5x = 1/3

3/8 x=1/3

x=8 91 (x+2/3) = 4/5

x+2/3)×4/5=1

4/5 x+8/15=1

4/5 x =7/15

x=7/12

Calculated at the same level, from left to right.

So 1 is multiplied by 2abc

According to the four rules of operation, the operation of the same level is calculated from left to right in order, in the problem of 5(b -1) 3 (3) 0(2abc), it is first divided by 5 (b -1) 3 by (-3) 0 and then multiplied by 2abc, that is, first divided by 1 and then multiplied by 2abc, the reason is the same as above, the product of the previous part is first divided by 1 and then multiplied by (2abc) a and then subtracted by 5 (b -1) 3, I hope to adopt!!

Algorithm: There are parentheses to calculate the parentheses first, then the power (the open square can also be said to be the multiplication, that is, the negative square) and then the first multiplication and division, then addition and subtraction, the same operation of the symbol is calculated from left to right, so this problem still has to divide 1 and then multiply 2abc

3:5 multiplied by 8 becomes 24:40, and the male-to-total ratio is 5:8 multiplied by 5 becomes 25:40, so that the total number of people in the class is the same proportional base. From this you know the percentage of change in the number of others.

3 and 5 multiplied by 8 at the same time, multiplied by 5 at the same time, and that's it, hehe, it's the first semester of sixth grade! Schoolmate. I'm in 6th grade.

10 This kind of question is very simple, don't stare at the boss.

The neighbor didn't make a profit, and the customer got a pair of shoes and 3 yuan, so the shopkeeper lost a total of 10 yuan.

I think the boss loss should be greater than 3 and less than 10, because the cost of cloth shoes is unknown, theoretically it should be between 0-7, so the loss is between 3-10. But this multiple-choice question does not have this alternative answer, so you can't consider the cost, and you can only choose b, 10 yuan.

That's 10 yuan.

There is no need to think about the intermediate process.

If $10 is true, then the boss doesn't lose, then the boss who $10 is fake loses $10.

Theoretically, it's $10.

But this is a very controversial question!

Resolution: 1 x 1 3

x≥1/3x2

1/3x2-x≥0

1/3x2+x≤0

x（1/3x+1）≤0

Solution: -1 3 x 0

If I'm helpful to you, please choose the answer in time

Solution: 1 Nayou 2009 1 Huhao 2008 + 1 2008 1 2007 ....〔1/3－1/2〕+〔1/2－1〕

1/2009-1/2008+1/2008-1/2007+..1 3-1 2+1 2-1

The solution upstairs, does it have anything to do with the topic?