Вопрос школьника по предмету Математика
Решите уравнение. В ответе укажите произведение корней.
x^3-2x^2-9x+18=0
Ответ учителя по предмету Математика
х^3-2x^2-9x+18=0
x^2(x-2)-9(x-2)=0
(X^2-9)*(x-2)=0
x^2=9 x=2
x=3 x=-3
Ответ: х=3, х=-3, х=2
Решите уравнение. В ответе укажите произведение корней.
x^3-2x^2-9x+18=0
х^3-2x^2-9x+18=0
x^2(x-2)-9(x-2)=0
(X^2-9)*(x-2)=0
x^2=9 x=2
x=3 x=-3
Ответ: х=3, х=-3, х=2
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