1.

(P square - 2pq + q square) - r square × s square

Answer»

Question:-

<P>(P square - 2PQ + Q square) - r square × s square

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P^2q - pr^2 - pq + r^2

=P × (pq-r^2)-(pq- r^2)

=(Pq-r^2) × (p-1).......

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