Answers

2016-07-18T23:57:23+08:00
To solve this, make 2 cases: 

≤ 3. and;
-n 
≤3.

Solve each individually.
Dun sa first, just rewrite it in interval notation form. n =(-
, 3]
Dun sa pangalawa,
-n 
≤ 3
≥ -3. Then lipat mo ulit sa interval notation form. n = [-3, +∞)

Then pag samahin mo to form,
(-∞, 3]∪[-3, +∞)


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