Factorize:
a3 – 0.064
We know that,
a3 - b3 = (a - b) (a2 + a × b + b2)
Using this formula, we get
= (a)3 – (0.4)3
= (a – 0.4) [(a)2 + a (0.4) + (0.4)2]
= (a – 0.4) (a2 + 0.4a + 0.16)