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= (3q+2)²<1²
= 9q²+12q+4<1
=9q²+12q+4-1<0
=9q²+12q+3<0
=(9q+3)(q+1)=0 (sementara)
=9q+3=0 atau q+1=0
=9q=-3 atau q=-1
=q=-3/9
=q=-1/2
HP ={-1<q<-1/2}
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