Respuesta :

Esther

Answer:

[tex]-5xy -13xy=-18xy[/tex]

[tex]m^8n^1 * m^3n^5=m^{11} n^6[/tex]

Step-by-step explanation:

[tex]-5xy -13xy=-18xy[/tex]

[tex]m^8n^1 * m^3n^5[/tex]

[tex]m^{8+3} =m^{11}[/tex]

[tex]n^{1+5} =n^6[/tex]

[tex]m^{11} n^6[/tex]

Hope this helps!