Question: Show that: i = 1 n ( x i - 0 ) 2 - i = 1 n ( x i - x ) 2

Show that:
i=1n(xi-0)2-i=1n(xi-x)2=n(x-0)2
Show that: i=1n(xi-0)2-i=1n(xi-x)2=n(x-0)2

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