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kate27678
@kate27678
July 2022
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найдите значение выражения (х^2-2х+4)(х+2)-1/3(3х-2)(3х+2)
при х = -1/3
помогите пожалуйста
даю 20 б
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MAGUSTR777
Х^3+8-1/3(9х^2-4)
х^3+8-3х^2+4/3
х^3+28/3-3х^2
если х= -1/3, то
-1/3^3+28/3-3*(-1/3)^2
-1/27+28/3-3(1/3)^2
-1/27+28/3-3*1/9
-1/27+28/3-1/3
242/27= 8 26/27
1 votes
Thanks 1
kate27678
помоги пожалуйста еще номер
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Answers & Comments
х^3+8-3х^2+4/3
х^3+28/3-3х^2
если х= -1/3, то
-1/3^3+28/3-3*(-1/3)^2
-1/27+28/3-3(1/3)^2
-1/27+28/3-3*1/9
-1/27+28/3-1/3
242/27= 8 26/27