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Mathematics, 22.02.2021 02:40 emmaphillips2
Show that for any a, b,c integers (a-b-c)^2-(a+b+c)^2+(a+b-c)^2-(a-b+ c)^2 is divisible by 4a
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Show that for any a, b,c integers (a-b-c)^2-(a+b+c)^2+(a+b-c)^2-(a-b+ c)^2 is divisible by 4a...
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