1. x≠0

TXD : D=R\{0}

2. x+1≠0 => x ≠ -1
TXD : D=R\{-1}

3. -4-8>0 => x>-2

TXD : (-2;+∞)

= |-3x-5|- |-3x+5|

= |- (3x+5)| - |-(3x-5)|

= |3x-5|-|3x+5|

= -[|3x+5| - |3x-5|]

= -f(x) => lẻ

1)My sister usually..........spends...............................an hour learning English every day.

2)They haven't met each other since they.........left..................................their primary school.

3)Hurry up or you............will be................................late for the first bus.

4)Daisy................reads........................this book several times.

-be-visit-play-draw-

1)Nam has a broken leg. He fell over while he.............was playing...............................basketball.

2)If we go on wasting natural resources, they..........will be.......................used up in a few decades.

3)This is the first time Maryam.......visited....................................the Templeof Literature.

4)Look! Tuan.........is drawing...................................a picture os Han Bridge