PROCEDIMIENTOS:
[tex](m^{2} + 7n-8c + d) - (m^{2} -9n + 11c + 14)\\m^{2} +7n-8c+d-m^{2} +9n-11c-14\\16n+19c+d-14[/tex]
Resultado: 16n+19c+d-14
[tex](m^{2} -n^{2} -4mn) - (- 3m^{3} -n^{3} + 12mn)\\m^{2} -n^{2} -4mn+3m^{3} +n^{3} -12mn\\m^{2} -n^{2} -16mn+3m^{3} +n^{3}[/tex]
Resultado: [tex]m^{2} -n^{2} -16mn+3m^{3} +n^{3}[/tex]
Atte: Sabius95
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Verified answer
PROCEDIMIENTOS:
[tex](m^{2} + 7n-8c + d) - (m^{2} -9n + 11c + 14)\\m^{2} +7n-8c+d-m^{2} +9n-11c-14\\16n+19c+d-14[/tex]
Resultado: 16n+19c+d-14
[tex](m^{2} -n^{2} -4mn) - (- 3m^{3} -n^{3} + 12mn)\\m^{2} -n^{2} -4mn+3m^{3} +n^{3} -12mn\\m^{2} -n^{2} -16mn+3m^{3} +n^{3}[/tex]
Resultado: [tex]m^{2} -n^{2} -16mn+3m^{3} +n^{3}[/tex]
Atte: Sabius95