Question

Me ayudarian porfavor?.

Si 123(n) = 38
Hallar "n"

Aritmetica - Numeracion

Answer 1

$123_{(n)}=38\\ \\1\cdot n^2+2\cdot n+3=38\\ \\n^2+2n+3-38=0\\ \\n^2+2n-35=0\\ \\(n-5)(n+7)=0 \\ \\n\in\{-7,5\}\to \boxed{\boxed{n=5}}$