(3b+2a)² = (3b)²+12ab+(2a)² = 9b²+12ab+4a²
Ответ: 3b, 9b², 4a²
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(3b+2a)² = (3b)²+12ab+(2a)² = 9b²+12ab+4a²
Ответ: 3b, 9b², 4a²