Factorise 27p³q³+64r³
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Step-by-step explanation:
27p³q³ + 64r³
(3)³p³q³ + (4)³ r³
(3pq)³ + (4r)³
(3pq + 4r)[(3pq)² - (3pq)(4r) + (4r)² ]
(3q + 4r) [ 9p²q² - 12 pqr + 16r²]
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