Question

как решить пример (n+8)(n-4)-(n+3)(n-2)+29

Answer 1

$n^{2}-4n+8n-32-( n^{2} -2n+3n-6)+ 29$
$n^{2} -4n+8n-32- n^{2} -n+6+29=3n+3=3(n+1)$