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иринаБро2
@иринаБро2
October 2021
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решите во вложениях!
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BJIADA
Смотри во вложении
__________________
2 votes
Thanks 1
Hellhould
А)
(7x-5)/3>(13x+1)/5
35x-25>39x+3
4x<-28
x<-7
б)
7x²-9x+2>0
D:81-56=25
x=(9±5)/14→x=1 x=2/7
(x-1)(x-2/7)>0
+ 2/7 - 1 +
----°-----°---->
x€(-∞;2/7)v(1;∞)
1 votes
Thanks 1
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Answers & Comments
__________________
(7x-5)/3>(13x+1)/5
35x-25>39x+3
4x<-28
x<-7
б)
7x²-9x+2>0
D:81-56=25
x=(9±5)/14→x=1 x=2/7
(x-1)(x-2/7)>0
+ 2/7 - 1 +
----°-----°---->
x€(-∞;2/7)v(1;∞)