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. f(x) ( x, 1, 4, 7 9) x = =2, x = 6

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f(x) ( x, 1, 4, 7 9) x = =2, x = 6, x = 8. , . , .

 

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. x = 11 x = -1. x = 11. : . , . , .

 

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- :

. (x = 2) (x - 2) ( x). .

 



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