09 À :: `+`(`*`(2, `*`(`^`(9, `+`(`*`(`^`(x, 2)), `-`(`*`(4, `*`(x))), 1)))), `*`(42, `*`(`^`(6, `+`(`*`(`^`(x, 2)), `-`(`*`(4, `*`(x))))))), `-`(`*`(15, `*`(`^`(4, `+`(`*`(`^`(x, 2)), `-`(`*`(4, `*`(x))), 1)...    Á :: [−1;3] 

ÐÅØÅÍÈÅ 

 

 

ÎÒÂÅÒ 

À :: `+`(2, `&+-`(sqrt(2))) Á ::  `+`(2, `-`(sqrt(2)))