total descendants::2 total children::2 18 ❤️
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Znazornenie a2 + b2 = c2 ![]() (a + b)2 = a2 + 2ab + b2 ![]() π ![]() dalsie: http://math.stackexchange.com/questions/733754/visually-stunning-math-concepts-which-are-easy-to-explain |
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