Odpowiedź:
3√28 + 2√63 = 3√4×7 +2√9×7= 3×2√7 + 2×3√7 = 6√7 +√ 6√7 = 12√7
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Odpowiedź:
3√28 + 2√63 = 3√4×7 +2√9×7= 3×2√7 + 2×3√7 = 6√7 +√ 6√7 = 12√7