x²+3x=2x+30
х²+3х-2х-30=0
х²+х-30=0
х²+6х-5х-30=0
х×(х+6)-5(х+6)=0
(х+6)×(х-5)=0
х(1)= -6 , х(2)= 5
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x²+3x=2x+30
х²+3х-2х-30=0
х²+х-30=0
х²+6х-5х-30=0
х×(х+6)-5(х+6)=0
(х+6)×(х-5)=0
х(1)= -6 , х(2)= 5