Ответ:
(1+у)(у-1)=у-1+у²-у=у²-1
-(3-4а)(3+4а)=-(9-16а²)=-9+16а²=16а²-9
(1/3+3р)(1/3-3р)=1/9-9р²
Объяснение:
(а+b)(a-b)=a²-b²
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Ответ:
(1+у)(у-1)=у-1+у²-у=у²-1
-(3-4а)(3+4а)=-(9-16а²)=-9+16а²=16а²-9
(1/3+3р)(1/3-3р)=1/9-9р²
Объяснение:
(а+b)(a-b)=a²-b²