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Factorise: 27p3 - 125q3. -

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Question

Factorise: 27p3 - 125q3.

Sum

Solution

27p3 - 125q3

= (3p)3 - (5q)3

= (3p - 5q) (9p2 + 15pq +25q2)

shaalaa.com
Factorisation using Identity a3 - b3 = (a - b)(a2 + ab + b2)
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