x2-7x+10=0 - x1=5 x2=2, x2+5x+6=0 - x1=-3 x2=-2, x2-8x+15=0 - x1=3 x2=5, x2+3x-4=0 - x1=-4 x2=1, x2-9x+18=0 - x1=6 x2=3,

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