Factorise the given number (6p-q)^3
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216 - q³ - 108p²q + 18pq²
Step-by-step explanation:
using the identity ( a - b )³ = a³ - b³ - 3ab(a-b)
a = 6p and -b = -q
(6p - q)³ = (6p)³ - (q)³ +3*6p*-q (6p - q)
= 216 - q³ - 18pq ( 6p - q)
= 216 - q³ - 108 p²q + 18 pq²
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