$18.24\cdot1000$

$\int\left(\sqrt{x^2+y^2}\right)dx$

$\:\left(18^5\right)\frac{3}{8}$

$a^2+b^3=\left(a+b\right)\left(a^2-ab+b^2\right)$

$f\left(x\right)=\left(\frac{\left(x+1\right)^2}{\left(2x-4\right)^{11}}\right)$

$\left(\left(7^{\left(2sinx+\sqrt{3}\right)}\right)=1\right)$

$4m\:-\:5m\:-\:6m\:+\:8m$