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Question

Add : 3p2q2-4pq+5,-10p2q2,15+9pq+7p2q2


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Solution

Add the given terms:

Given,3p2q2-4pq+5,-10p2q2,15+9pq+7p2q2

On combining the like terms and adding them we get

=3p2q24pq+5+(-10p2q2)+15+9pq+7p2q2=3p2q210p2q2+7p2q24pq+9pq+5+15=p2q2(3-10+7)+pq(-4+9)+(5+15)=p2q2(0)+pq(5)+20=5pq+20

Hence, on adding 3p2q2-4pq+5,-10p2q2,15+9pq+7p2q2 we get 5pq+20.


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