rogerio-venancio
rogerio-venancio
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h : hipotenusa x: cateto h² = x² + x² = 2x² vamos colocar x sobre a forma a + b√2 x² = (a + b√2)² = a² + 2b² + 2ab√2 2x² = 2a² + 4b² + 4ab√2 a) (1 + 2√2)² = 1 + 8 + 4√2 = 9 + 4√2 b) (3 + √2)² = 9 + 2 + 6√2 = 11 + 6√2 c) (2 + 3√2)² = …