Номер 128(1,4)сделаите пожалуиста

1) [latex]D= 25 -4*(-8)=25+32=57[/latex] [latex] \sqrt{D} = \sqrt{57} [/latex] [latex] x_{1} = \frac{5- \sqrt{57} }{2} ; x_{2} = \frac{5+ \sqrt{57} }{2} [/latex] 4) [latex]D=1-4*3*(-2)=1+24=25, \sqrt{D} =5[/latex] [latex] x_{1} = \frac{1-5}{6} = \frac{-4}{6} =- \frac{2}{3} ; x_{2} = \frac{6}{6} =1[/latex]