wykonaj mnożenie i zreduguj wyrazy podobne:
1) 2(a+3)(3a-2),
2) (3a^-b)(a^-2b)
3) -4(a-2b)(2b-a)
1) 2(a+3)(3a-2) =2(3a*-2a+9a-6)=2(3a*+7a-6)=6a*+14a-12
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1) 2(a+3)(3a-2) =2(3a*-2a+9a-6)=2(3a*+7a-6)=6a*+14a-12