$\left(\frac{4}{15}ab-\frac{15}{2}cd\right)^3$

$-5x^3y+2x^2+3x-2x^2+8x^3+y+x$

$\left(x+\right)\left(x+13\right)$

$\int\left(\left(2x+3\right)^3\right)dx$

$\frac{2x^2-3x-7}{x-2}$

$\lim_{x\to0}\left(\frac{xe^{3x}}{arcsen\left(x\right)}\right)$

$\frac{4a^3\left(b^2a\right)^{-4}}{c^{-6}a^2b^{-7}}$