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Question

Add: 2p2q2−3pq+4 and 5+7pq−3p2q2

A
p2q2+4pq+9
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B
5p2q2+5pq+8
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C
p2q2+5pq+9
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D
p2q2+5pq+8
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Solution

The correct option is A p2q2+4pq+9

Given 2p2q23pq+4 and 5+7pq3p2q2

On adding we get,

=(2p2q23pq+4)+(5+7pq3p2q2)

=2p2q23pq+4+5+7pq3p2q2

=2p2q23p2q23pq+7pq+4+5

=p2q2+4pq+9

(2p2q23pq+4)+(5+7pq3p2q2)=p2q2+4pq+9


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