Answer :

2p2q2+3pq2-5p2q2=
take q2 common
q2(2p2+3p-5p2)
=q2(3p-3p2)
take 3p common in 3p-3p2
=q2(3p(1+p))
=3pq2(1+p)
Chotubls
2p2q2+3pq2-5p2q2= 3pq2 - 3p2q2 = 3pq2(1-p)

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