3z+1-9z²/(черта дроби)3z

Question

3z+1-9z²/(черта дроби)3z

Answer 1

1)x^2y-3xy-xz+3z=xy(x-3)-z(x-3)=(x-3)(xy-z)

2)ax-2a/ax=a(x-2)/ax=x-2