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Question
Factorise the following expression.
3pqr – 6p2q2r2 – 15r2
Solution
We have,
3pqr – 6p2q2r2 – 15r2
= 3pqr – 3 × 2p2q2r2 – 3 × 5r2
= 3r(pq – 2p2q2r – 5r)
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