$\left(27m^3-125n^3\right)\left(32m-5n\right)$

$\sin\left(x\right)\sin\left(y\right)dx=\cos\left(x\right)\cos\left(y\right)dy$

$\int_1^{\infty}\left(\frac{5}{x^2}\right)dx$

$\frac{2x}{5}+\frac{4z}{5}-\frac{2x}{5}$

$\frac{16m^8-100}{4m^4-10}$

$\frac{1+cos\left(2x\right)}{3sen\:\left(2x\right)}=\frac{cot\left(x\right)}{3}$

$\left(8x-9y\right)\left(8x+9z\right)$