Respuesta :

S3rene

Answer:

10a-41

Step-by-step explanation:

(a+4)(a-4)-[tex](a-5)^{2}[/tex]

=[tex]a^{2}[/tex]-[tex]4^{2}[/tex]-([tex]a^{2}[/tex]-10a+25)

=[tex]a^{2}[/tex]-16-[tex]a^{2}[/tex]+10a-25

=10a-41