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villainess13
@villainess13
July 2022
1
3
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(x-3):(Х^2-6Х+9)/(Х+3) при Х= -21
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litanalove
Verified answer
Нижний знаменатель поднимаем наверх
((x-3)(x+3))/(x-3)^2=
=(x+3)/(x-3)=(-21+3)/(-21-3)=
=(-18)/(-24)=0.75
12 votes
Thanks 22
sumbeerg
а вы бы не могли расписать на листке? и почему мы знаменатель поднимаем?
litanalove
тк, самый нижний знаменатель поднимаем наверх по правилам
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Answers & Comments
Verified answer
Нижний знаменатель поднимаем наверх((x-3)(x+3))/(x-3)^2=
=(x+3)/(x-3)=(-21+3)/(-21-3)=
=(-18)/(-24)=0.75