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=9p^2+6pq+6pq+4q^2
9p^2+12pq+4q^2
( 9p^2+12pq+4q^2 ) (3p+2q)
=27p^3+18p^2q+36p^2q+24pq^2+12pq^2+8q^3
27p^3+54p^2q+36pq^2+8q^3
jadi jawabannya D