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Glamure
@Glamure
November 2021
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Ребяяяяят,нужна помощь..........упростите выражение!
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tan4ik3107
=(2х/(х-7) +7х/(х-7)^2) : 2х-7/(х-7)(х+7) - 7(х+7)/х-7=
((2х(х-7)+7х)/(х-7)^2) : (2х-7)/(х-7)(х+7) - 7(х+7)/х-7=
((2х^2-14х+7х)/(х-7)^2) * (х-7)(х+7)/(2х-7) - 7(х+7)/х-7=
(2х^2-7х)(х+7)/(2х-7)(х-7) - 7(х+7)/х-7=
х(2х-7)(х+7)/(2х-7)(х-7) - 7(х+7)/х-7=
х(х+7)/х-7 - 7(х+7)/х-7=
(х(х+7)-7(х+7))/х-7=
(х+7)(х-7)/х-7=
х+7
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Answers & Comments
((2х(х-7)+7х)/(х-7)^2) : (2х-7)/(х-7)(х+7) - 7(х+7)/х-7=
((2х^2-14х+7х)/(х-7)^2) * (х-7)(х+7)/(2х-7) - 7(х+7)/х-7=
(2х^2-7х)(х+7)/(2х-7)(х-7) - 7(х+7)/х-7=
х(2х-7)(х+7)/(2х-7)(х-7) - 7(х+7)/х-7=
х(х+7)/х-7 - 7(х+7)/х-7=
(х(х+7)-7(х+7))/х-7=
(х+7)(х-7)/х-7=
х+7