$-\left(2+\sqrt{3}\right)+\sqrt{3}$

$\int\left(2x^2+1\right)e^{\frac{x}{2}}dx$

$\left(2\right)\left(0\right)\left(-4\right)$

$\frac{\sin\left(x\right)+2\sin\left(x\right)\cos\left(x\right)}{\frac{1}{\cos\left(x\right)}+2}$

$3\left(x-8\right)>-6$

$x^2-1.8x+0.81$

$-4=-17+x$