Question

Can you please Factorise x^9 - y^9

Answer 1

x^9-y^9

=( x³)³-(y³)³

we know that

x3 - y3 = (x - y)(x^2 + xy + y^2) 

(x³-y³)[(x³)²+x³*y³+(y³)²]

= x³-y³(x^6+y^6+x³y³)

= (x - y)(x^2 + xy + y^2) (x^6+y^6+x³y³)

hope helped !