решите
3x^2+130x-133=0
31x^2-29x-2=0
15x^2+10x-5=0

1)3х²+133х-3х-133=0х(3х+133)-(3х+133)=0(3х+133)(х-1)=03х+133=0х-1=0х=-133/3х=12)31х²+2х-31х-2=0х(31х+2)-(31х+2)=0(31х+2)(х-1)=031х+2=0х-1=0х=-2/31х=13)3х²+2х-1=03х²+3х-х-1=03х(х+1)-(х+1)=0(х+1)(3х-1)=0х+1=03х-1=0х=-1х=1/3