$\frac{7}{2}^{-4}$

$\lim_{x\to1}\left(\frac{\left(x^2+4x-5\right)}{\ln\:\left(x\right)}\right)$

$\int\left(e^{38x}\right)dx$

$2a^2+3b^2-5a^2-12b^2$

$-4\left(x^3-5x\right)^2$

$\left(3^{n-3}-3^{n-2}\right)^2$

$\lim_{x\to+\infty}\left(\frac{x^2-3}{x^2}\right)^{\frac{5x}{6}}$