1.

(p-q) (p+q) (p square+q square)​

Answer»

<P>(p-Q) (p+q) (p SQUARE + q square)

=(pp+pq-qp-qq) (p square +q square)

=(p square1+1+pq-qp-q square1+1) (p square 2 + q square 2)

=p square 4 -q square 4.



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