Resposta :
[tex]\Large\boxed{\begin{array}{l}\sf x(y+1)-m(y+1)\\\huge\boxed{\boxed{\boxed{\boxed{\sf\blue{(y+1)\cdot (x-m)}}}}}\end{array}}[/tex]
[tex]\Large\boxed{\begin{array}{l}\sf x(y+1)-m(y+1)\\\huge\boxed{\boxed{\boxed{\boxed{\sf\blue{(y+1)\cdot (x-m)}}}}}\end{array}}[/tex]