Factories:
16(2p – 3q)2 – 4(2p – 3q)
= (2p – 3q){16(2p – 3q) – 4}
= (2p – 3q){(32p – 48q) – 4}
= (2p – 3q)(32p – 48q – 4)
= 4(2p – 3q)(8p – 12q -1)
So,
We get,
16(2p – 3q)2 – 4(2p – 3q) = 4(2p – 3q)(8p – 12q -1)