Q.2 [10] Evaluate the following limits (hint: at a certain point a change of variable might be useful) \text { 1. } \lim _{x \rightarrow 1} \frac{4^{2 x-2}-1}{5 x^{2}-3 x-2}

\text { 2. } \lim _{x \rightarrow+\infty}\left(5 x+2 x^{3}\right)\left(e^{-3 / x^{3}}-e^{4 / x^{3}}\right)