Zamień sumę na iloczyn:
3a(a-b) + 2a(a-b) = 5a(a-b)
3a(a-b)+2a(a-b)=3a²-3ab+2a²-2ab=5a²-5ab=5a(a-b)
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3a(a-b) + 2a(a-b) = 5a(a-b)
3a(a-b)+2a(a-b)=3a²-3ab+2a²-2ab=5a²-5ab=5a(a-b)