Question

Factorise:

8x³ + 343y³

Answer 1

Given expression: 8x³ + 343y³

⇒ (2x)³ + (7y)³

We know that,

a³ + b³ = (a + b) (a² – ab + b²)

Hence,

⇒ (2x + 7y) (4x² – 14xy + 49y²)