hp40g+.book Page 3 Friday, December 9, 2005 1:03 AM
Press 
to factor 20 into 22 ⋅ 5 .
Press 
to select
22 ⋅ 5 and 
to simplify it.
Press 
to select
5
to exchange 3
12 with
5 .
Press 
to select
2
45 and 
to select 45.
Press 
, select FACTOR and press
.
Press 
to factor 45 into 32 ⋅ 5 .
Press 
to select
32 ⋅ 5 and 
to simplify the selection.
Press 
to select
2 ⋅ 3
5 , and 
to select
2 ⋅ 3
5 – 2
5 .
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