Respuesta :

we have given

[tex] (5n^2+7n)-(7n^2+8n) [/tex].

we need to find the difference between two terms .[tex] (5n^2+7n)-(7n^2+8n)=5n^2+7n-7n^2-8n=5n^2-7n^2+7n-8n [/tex]

[tex] -2n^2-n=-n(2n+1) [/tex].

here we have find the difference and taken out n as common

and rewritten the expression.

Supernova

(5n² + 7n) - (7n² + 8n )

Combine like terms. Like terms have the same variables and exponents. In this case, the like terms are 5n² - 7n² and 7n - 8n.

[tex] \boxed {-2n^2 - n } [/tex]is your answer.