$\left(-0.3+2\cdot0.8\right)$

$\frac{\:9.33262154439441e+155}{650}$

$\frac{dy}{dx}=\left(2-x\right)\left(4-y\right)$

$\left(\sqrt[6]{9x^{11}y^4z^{18}}\right)$

$\:\:\:\:\left(\frac{1}{2}r^2+\:\frac{1}{3}s\right)^3$

$10\:-\:\left(-2\right)$

$\int15x\sqrt{\left(x+4\right)^3}dx$