ALSINA, C.; MONREAL, A. Proof without words: (a + b)^3 = a^3 +3a^2b +3ab^2 + b^3. Teaching Mathematics and Computer Science, [S. l.], v. 1, n. 1, p. 157, 2003. DOI: 10.5485/TMCS.2003.0004. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/14691. Acesso em: 27 sep. 2024.