Ответ:
х²+30х+161=0
D=30²-4*161=900-644=256
√D=√256=16
x1=-30-16/2=-46/2=-23
x2=-30+16/2=-14/2=-7
х1= -23; х2=-7
-7> -23
х1-х2= -7-(-23)=-7+23=16
х1+х2=-7+(-23)=-7-23=-30
х1*х2=-7*(-23)=161
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Ответ:
х²+30х+161=0
D=30²-4*161=900-644=256
√D=√256=16
x1=-30-16/2=-46/2=-23
x2=-30+16/2=-14/2=-7
х1= -23; х2=-7
-7> -23
х1-х2= -7-(-23)=-7+23=16
х1+х2=-7+(-23)=-7-23=-30
х1*х2=-7*(-23)=161