Jawabanmu

2014-02-01T18:46:16+07:00
*D>0
b^2-4ac>0
(2p+3)^2-4(p+1)(p+2)>0
4p^2+12p+9-4(p^2+3p+2)>0
9p+7>0
9p>-7
p>-7/9
*p+2<0
p<-2
jadi p>-7/9 atau p<-2