Ответ:
5х²+2х=0
х(5х+2)=0
х1=0
5х+2=0
5х=2
х2=2/5
х2=0,4
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Ответ:
5х²+2х=0
х(5х+2)=0
х1=0
5х+2=0
5х=2
х2=2/5
х2=0,4