Question

Factorise the following-

Answer 1

xy((xy)^2 -(5/z)^2)
xy(xy+ 5/z)(xy- 5/z)

Answer 2

x³y³-25xy/z²

=xy(x²y²-5²/z²)

=xy(xy)²-(5/z)²

=xy(xy+5/z)(xy-5/z)

=xy(xyz+5)/z * (xyz-5)/z