46*44: 4*(4+1)=20; 6*4=24 so 2024
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see my answer above: (x+a)*(y-a) = xy-ax+ay-a^2 =xy+a(y-x-a)
-linda2-
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01/22/2010 postreply
07:27:26
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you are smart :)
-爱家的男人-
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01/22/2010 postreply
08:03:42
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Yes, when I was a little kid, thanks!
-linda2-
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01/22/2010 postreply
08:10:43