(а + b)² = a² + 2ab + b²
(11 целых 1/11)² = (11 + 1/11)² = 11² + 2 * 11 * 1/11 + (1/11)² = 121 + 2 + 1/121 = 123 + 1/121 = 123 целых 1/121
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(а + b)² = a² + 2ab + b²
(11 целых 1/11)² = (11 + 1/11)² = 11² + 2 * 11 * 1/11 + (1/11)² = 121 + 2 + 1/121 = 123 + 1/121 = 123 целых 1/121