Question

Giúp mik làm gấp

Answer 1

2:

1: A=[-3;5)

2: B=(-1;+\(\infty\))

3: C=(-\(\infty\);3]

4: D=[-3;3]

5: |x-1|>=2

=>x-1>=2 hoặc x-1<=-2

=>x>=3 hoặc x<=-1

=>E=[3;+\(\infty\))\(\cup(-\infty;-1]\)

6: 2x+3>0

=>2x>-3

=>x>-3/2

=>F=(-3/2;+\(\infty\))

7: (x-2)^2<x^2+1

=>x^2-4x+4<x^2+1

=>-4x<-3

=>x>3/4

=>G=(3/4;+\(\infty\))