$-200+\left(\left(-\frac{32}{2}\right)-\left(-\frac{15}{5}\right)+\left(-15\right)\right)$

$\int\frac{x+6}{\sqrt{x^2+12x+12}}dx$

$4t^2-3t+9=0$

$x^{27}-24x^{18}$

$-\int_{\frac{\pi}{2}}^{\frac{3\pi}{2}}\left(2\:cos\:x\right)dx$

$\left(-12\right).3+18\left(-12\:6+8\right)$

$0.3a\:+0.4b\:+0.5c\:-0.6a\:-0.7b\:-0.9c\:+3a\:-3b\:-3$