$\mathrm {\int_{1}^{2} e^{2 x+5} d x=?}$

$\mathrm {\frac{1}{2}\left(e^{7}-e^{9}\right)}$

$\mathrm {2\left(e^{9}-e^{7}\right)}$

$\mathrm {\frac{1}{2}\left(e^{9}-e^{7}\right)}$

$\mathrm {2\left(e^{9}+e^{7}\right)}$