subtract :-
(i) (a-b) from ab-b
(ii) 4pq+5q^2-3p^2 from 5p^2-3q^2-pq
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1) ab-b-(a-b)
=ab-b-a+b
=ab-a
2)5p^2-3q^2-pq-(4pq+5q^2-3p^2)
=5p^2-3q^2-pq-4pq-5q^2+3p^2
=8p^2-8q^2-5pq
ankit7958:
Hi
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