$-6m^2n\left(m^2n\right)$

$6x^3+y^4=6x$

$\left(8d^3-9d^2\:\right)\left(-d^2\:+2d\right)\:\left(-4d-7\right)$

$\left(a^3-b^2\right)^2\cdot a-b;\:a=-2;\:b=-3$

$\int u^2\cdot\cos\left(2u^3\right)du$

$\cos\left(\arcsin\left(-\frac{12}{13}\right)-\arccos\left(\frac{5}{13}\right)\right)$

$\left(\frac{y+3}{x-2}\right)^4$