We know that, a 3 + b 3 = (a + b) (a 2 – a × b + b 2 ) Using this formula, we get = x 3 + 3 3 = (x + 3) (x 2 – 3x + 9)

Factorize: x 3 + 27

We know that,

a³ + b³ = (a + b) (a² – a × b + b²)

Using this formula, we get

= x³ + 3³

= (x + 3) (x² – 3x + 9)