Ответ:
1)х1+х2=21
х1×х2=80
х1=5
х2=16
2)х1+х2=10
х1×х2=-39
х1=-3
х2=13
x²-21x+80=0
x₁+x₂= 21
x₁*x₂= 80
x₁= 5
x₂= 16
x₂-10x-39=0
x₁+x₂= 10
x₁*x₂= -39
x₁= -3
x₂= 13
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Ответ:
1)х1+х2=21
х1×х2=80
х1=5
х2=16
2)х1+х2=10
х1×х2=-39
х1=-3
х2=13
x²-21x+80=0
x₁+x₂= 21
x₁*x₂= 80
x₁= 5
x₂= 16
x₂-10x-39=0
x₁+x₂= 10
x₁*x₂= -39
x₁= -3
x₂= 13