Factorize:
1 – 27 x3
We know that,
a3 - b3 = (a - b) (a2 + a × b + b2)
Using this formula, we get
= (1)3 – (3x)3
= (1 – 3x) [(1)2 + 1 (3x) + (3x)2)
= (1 – 3x) (1 + 3x + 9x2)