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Factorise each of the following:
(i) 8a^3 + b^3 + 12a^2b + 6ab^2=
(ii) 8a^3 – b^3 – 12a^2b + 6ab^2=
(iii) 27 – 125a^3 – 135a + 225a^2=
Answer variants:
(3 + 5a) (3 + 5a) (3 – 5a)
\((2a – b) (2a – b) (2a – b)
(2a + b) (2a + b) (2a + b)
(2a + b) (2a -b) (2a - b)
(3 – 5a) (3 – 5a) (3 – 5a)
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