Question

Factor mn+5m-3n-15.

Answer 1

$mn+5m-3n-15=\boxed{m}\cdot n+\boxed{m}\cdot5\boxed{-3}\cdot n\boxed{-3}\cdot5\\\\=\boxed{m}(n+5)\boxed{-3}(n+5)=\boxed{\boxed{(n+5)(m-3)}}$

Answer 2

mn + 5m - 3n - 15
(m - 3)(n + 5)