Ответ:
1)2x^2y*(2x-3y)
2)5a*(a^2-3ab+4b^2)
3)3n^2*(2m-3n+4m^2)
4)-3xy*(y+5x+7xy)
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Ответ:
1)2x^2y*(2x-3y)
2)5a*(a^2-3ab+4b^2)
3)3n^2*(2m-3n+4m^2)
4)-3xy*(y+5x+7xy)