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Happy new year math problem
The solution (1) is m- 1≠0 and m-4 >; 0

Solving m> iv

Therefore, the value range of m is m> four.

(2) let the price of milk be x.

Then 0.9x

The solution is 10.

Since the price of milk is an integer, the price of milk is 1 1 yuan.

(3) Length+width of rectangle = 16/2=8.

8= 1+7=2+6=3+5

Then there are three kinds (I wonder if there are any matches in the middle of the bag)

(4) Assume that X bottles of mineral water are purchased, and the total consumption is Y..

A shopping mall: y? =0.9 1.2x(x>0)

B mall: y? =﹛ 1.2x(0; 4.8+0.96x, and x >;; 40

3 if y? =y? , then1.08x >; 4.8+0.96x, the solution is x=40.

(5)x? -3x-10 = (x-5) (x+2) = (x+a) (x+b), then a=5 or -2, and b=5 or -2.

(6) Let the side length of a square be X and the other be Y. ..

4x-4y=96。

x? -Really? =960

X=32,y=8。

Then the side lengths of these two squares are 32 and 8cm respectively.

(7) 199? - 199= 199( 199+ 1)( 199- 1)= 199× 198×200

So 199? -199 is divisible by 198. Divisible by 200.

(8)ab/(a-x)

(9) If your hands are numb, write it yourself. . . .