Д=25-4×2×3=1
х1= (-5+1)/4= -1
х2= (-5-1)/4=1,5
(1,5+1)^2= 2,25+3+1= 6,25
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Д=25-4×2×3=1
х1= (-5+1)/4= -1
х2= (-5-1)/4=1,5
(1,5+1)^2= 2,25+3+1= 6,25