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प्रश्न
Add the following expressions:
p2qr + pq2r + pqr2 and – 3pq2r – 2pqr2
उत्तर
We have, p2qr + pq2r + pqr2 + (–3pq2r – 2pqr2)
= p2qr + pq2r + pqr2 – 3pq2r – 2pqr2
On combining the like terms,
= p2qr + pq2r – 3pq2r + pq2 – 2pqr2
= p2qr – 2pq2r – pqr2
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