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First we should try to demonstrate the identity "with words". To do...
The proof "without words" is way simpler than the proof "with words...
Proof Without Words:
Cubes
and
Squares
J.
Borry
Love
Originally appeared as:
Love,
J.
Barry. "Proof Without Words: Cubes and Squares."
Mathematics Magazine.
vol.
SO,
no.
2
(March 1977),
p.
74.

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