96 баллов(3 задания).1)Найти сумму корней уравнения:
[tex](4-x)^2+(x-4)(x^2-2x-2)=0[/tex]
2)Найти произведение корней уравнение:
[tex]3x^4+14x^2(x-3)-5(x-3)^2=0[/tex]
3)Вычислите
[tex] \frac{36}{ \sqrt{55+14 \sqrt{6} }-7 } [/tex]
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