Предмет: Алгебра, автор: giteraroslav10

Упростите пжпжпжпжпж

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Автор ответа: svetlanavaslarionova

a)(а+2)(5+1)

б)(х-3)(1-3)=-2(х-3)в)х-7-3х+9=-2х+2

г)120х-15-120х-32=-47

2)а)2х^2+2х-8х+4х^2=6х^2-6х

б)4ху-6у^2-15у^2+9ху=13ху-21у^2

в)3с^2+3сd+3cd-3d^2=3c^2+6cd-3d^2

г)15ab-5b^2-15ab+3a^2=3a^2-5b^2

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