$\left(3a^4+b^3c\right)^2$

$\left(c^2+c^3\right)^3$

$\lim_{x\to0}\left(\frac{e^{6x}-1}{sin\:\left(x\right)}\right)$

$\int\frac{2}{\left(4+x^2\right)^{\frac{3}{2}}}dx$

$\lim_{x\to\infty}\left(1+2x\right)^{\frac{1}{\sin\left(x\right)}}$

$\lim_{x\to-\infty}e^{\frac{5}{x-1}}$

$\frac{6+2x}{3}\le2$