Answer:
[tex] = - {m}^{2} - 3n + 13[/tex]
Step-by-step explanation:
[tex] - (m \times m + 3n - 13)[/tex]
[tex]m \times m = {m}^{1} \times m[/tex]
[tex] {m}^{1} \times {m}^{1} = {m}^{1 + 1} = {m}^{2} [/tex]
[tex] - ( {m}^{2} + 3n - 13)[/tex]
[tex] = - {m}^{2} - 3n + 13[/tex]
