Представьте в виде произведения:
1. 4ab^3 - a^3b
2. b^2 - 8b + 16
3. 3a^2 + 3ab - 7a - 7b
1. 4ab^3 - a^3b
2. b^2 - 8b + 16
3. 3a^2 + 3ab - 7a - 7b
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Answers & Comments
2. b^2 - 8b + 16=(b-4)²
3. 3a^2 + 3ab - 7a - 7b=3a(a+b)-7(a+b)=(3a-7)(a+b)