(3х+2)^2-2х=(3х-1)(3х+1)2х-7+3х=4+х-2х(х+5)=0
Объяснение:
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(3х+2)^2-2х=(3х-1)(3х+1)2х-7+3х=4+х-2х(х+5)=0
Объяснение: