$\frac{tan^2\left(x\right)}{sin\left(x\right)}$

$m^3-\left(m-1\right)\left(m^2+m+1\right)$

$0.008\cdot0.008$

$105a^3-46a^3+58a^3+301a^4$

$\lim_{x\to\infty}\left(\frac{4x^2+7}{5x^3+3}\right)$

$\left(\frac{3}{2}x+\frac{2}{5}xz^{3}\right)^{3}$

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