Question

Factorise the following:

5x³ – 80x

Answer 1

Both terms are divisible by 5 and x. We can factor out 5x:

5x(x² − 16)

a² − b² = (a − b) (a + b)

(x² − 4²) = (x − 4) (x + 4)

5x(x − 4) (x + 4)