Х²+11х+10=0 8х²-2х-1=0
х²+4х-5=0
16х²-2х-3=0
__________
х²+7х-18=0
28х²+33х+9=0
х²+х-56=0
15х²+4х-4=0
х²+4х-5=0
16х²-2х-3=0
__________
х²+7х-18=0
28х²+33х+9=0
х²+х-56=0
15х²+4х-4=0
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