which of the following expression has (7p-q-3r)as one of its factors?
1.49p^2-q^2-9r^2-14pq
2.p^2+49q^2-9r^2-14pq
3. 49p^2+q^2-9r^2+14pq
4.49p^2+q^2-9r^2-14pq

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Question

which of the following expression has (7p-q-3r)as one of its
factors?
1 49p^2-q^2-9r^2-14pq
2 p^2+49q^2-9r^2-14pq
3 49p^2+q^2-9r^2+14pq
4 49p^2+q^2-9r^2-14pq

Rishabh Mittal · Accepted Answer

Dear Student ,
Please find below the solution to the asked query :

4
 49p2+q2-9r2-14pq has 7p-q-3r as one of its factors 
49p2+q2-9r2-14pq=7p2+q2-3r2-27pq=7p-q2-3r2                         Since a-b2=a2+b2-2ab=7p-q+3r 7p-q-3r         Since a2-b2=a+b a-bSo , it has 7p-q-3r as one of its factors 
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which of the following expression has (7p-q-3r)as one of its factors? 1.49p^2-q^2-9r^2-14pq 2.p^2+49q^2-9r^2-14pq 3. 49p^2+q^2-9r^2+14pq 4.49p^2+q^2-9r^2-14pq

which of the following expression has (7p-q-3r)as one of its factors?
1.49p^2-q^2-9r^2-14pq
2.p^2+49q^2-9r^2-14pq
3. 49p^2+q^2-9r^2+14pq
4.49p^2+q^2-9r^2-14pq