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Ответ

Ответ дан
maskejyt

Ответ:

сделаем систему

1)x=3

2)x-4=-3

x=3

x=1

два корня

Ответ

Ответ дан
Yggdrasill09

Ответ:

x₁=3 x₂=1

Пошаговое объяснение:

х²-4х+3=0

D=b²-4ac

D=16-4*3=4

x_{1,2} =frac{-b+-sqrt{D}}{2a}\\x_{1} =frac{4+2}{2}=3\\x_{2}=frac{4-2}{2} =1

Делаем проверку. При х=3 получаем,

3(3-4)=-3

3(-1)=-3

-3=-3 Верно

При х=1 получаем,

1(1-4)=-3

1(-3)=-3

-3=-3 Верно

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