This software is made for the purpose of acquiring the expanded result of "a2+2ab+b2”, when (a+b)2 is set.Accordingly this software is made for the purpose of acquiring an expansion of an equation.And the acquired equations can be added or expanded by files-works each other.The straight lines equation passing several points on X-Y plane or 3-dimension and having minimum distance were showed on the document of "About equation software".

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