1) Resolva as inequações produto:

a) (x-2).(1-2x)≤ 0.
b) (2x+1).(x+2)≤ 0.
c) (x-1).(2-x).(-x+4)< 0.
d) (x+3).(x-2)> 0
e) (3x+2).(-3x+4).(x-6)< 0
f) (x+1).(x-2).(x-3)> 0
g) (5-x).(x-2)< 0