p^{2} – 2pq + q^{2} ____________ 2p^{2} -3pq + q^{2}

P^{2}-pq-pq+q^{2}p (p-q)-q(p-q)(P-q)^{2}

2p^{2}-3pq+q^{2}=2p^{2}-2pq-pq-q^{2}=2p(p-q)-q(p-q)=(2p-q) (p-q)(p-q) (p-q) = p-q (2p-q)(P-q) 2p-q^{p-q}/_{2p-q}

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