Решите неравенства номер 1069

Question

Решите неравенства номер 1069

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Answer 1

|1+2x|<9<br>1+2x<9<br>2x<8<br>x<4<br>x>=-4
[-4;4)

|3+2x|<=5<br>3+2x<=5<br>2x<=2<br>x<=1<br>x>=-4
[-4;1]

|1-2x|>=7
1-2x>=7
-6>=2x
-3>=x
x>=4
(-&;-3] [4;+&)