8. Factorise each of the following: (i) 8a3 + b3 + 12a+b + 6ab2 (iii) 27 – 125a - 135a + 225a2 (ii) 8a - b3 - 12a+b + 6ab2 (iv) 64a - 275 - 1440b + 108ab2
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8a3−b3−12a2b+6ab
2a3−b3−3×(2a)2(b)+3×2a×b2
(2a−b)3
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