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Уганда1111
@Уганда1111
July 2022
2
9
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|9-x|<2, |x+7|>8
спасибо
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Хуqожнuк
|9 - x| < 2
-2 < 9 - x < 2 | -9
-11 < -x < -7 | *(-1)
11 > x > 7
7 < x < 11
Ответ: (7; 11)
|x + 7| > 8
x + 7 > 8
x + 7 < -8
x > 1
x < -15
Ответ: (-∞; -15) ∪ (1; +∞)
1 votes
Thanks 1
qwertyaliya
19-xl <2
-2 <9-x <2 l-9
-11 <-x <-7 l*(-1)
11> x > 7
7 <x <11
oтвет: (7; 11)
lx+7l> 8
x+7> 8
x+7 <-8
x>1
x <-15
Ответ:(-°°;-15) U(1;+○○)
0 votes
Thanks 0
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Answers & Comments
-2 < 9 - x < 2 | -9
-11 < -x < -7 | *(-1)
11 > x > 7
7 < x < 11
Ответ: (7; 11)
|x + 7| > 8
x + 7 > 8
x + 7 < -8
x > 1
x < -15
Ответ: (-∞; -15) ∪ (1; +∞)
-2 <9-x <2 l-9
-11 <-x <-7 l*(-1)
11> x > 7
7 <x <11
oтвет: (7; 11)
lx+7l> 8
x+7> 8
x+7 <-8
x>1
x <-15
Ответ:(-°°;-15) U(1;+○○)