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1. Given x + y = - 4, xy = - 12, then (x + 1 of Y + 1) + (y + 1 of X + 1) = (write the answer only) 2. The fraction (X-Y of XY) + (X-Y of XY + x) can be reduced to () A. X of Y B. X / XY C. Square x D.x-2y (write the answer only) 3. It is known that [(x-1) (X-2)] (3x-4) = (a of x-1) + (B of X + 1)), and the integers a and B are obtained 4. The ratio of the number of delivery personnel to the number of sales personnel in the home appliance Department of a large shopping mall is 1:8. Due to the obvious increase of home appliance sales this summer, the manager of the home appliance department dispatched 22 people from the sales personnel to deliver the goods. As a result, the ratio of the number of delivery personnel to the number of sales personnel is 2:5?
1 -48/7
2、A
3、A=1 B=2（x+1）/（x-2）
4. The original deliverer is x and the seller is y
8x=y x+22:y-22=2:5
x=14 y=112
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