Pregunta: Find limn→∞n2+42-2n

Evaluate the limit.

$\frac{\sqrt{1+4\underset{\mathrm{n}\to \mathrm{\infty }}{lim}\left(\frac{1}{{\mathrm{n}}^2}\right)}-\underset{\mathrm{n}\to \mathrm{\infty }}{lim}\left(\frac{2}{\mathrm{n}}\right)}{\underset{\mathrm{n}\to \mathrm{\infty }}{lim}\left(1\right)}$

Since its numerator approaches a real number while its denominator is unbounded, ...