World Beyblade Organization by Fighting Spirits Inc.

Full Version: formule
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if you are itellectual learn 1 formula per day.
(a+b)*(a+b)=a*a+2ab+b*b
(a-b)*(a-b)=a*a-2ab+b*b
(a+b)*(a-b)=a*a-b*b
We already have a Mathematics thread; just use that.