$-1+5-2x-2$

$\int\frac{1}{\left(x-6\right)^2\left(x-8\right)}dx$

$81x^2+9=0$

$\frac{7\left(0.5\times4\right)-4}{2}$

$1+\sin\left(x\right)=\sin\left(x\right)\left(1+\csc\left(x\right)\right)$

$x+2>2-x$

$\frac{\left(ax^2\left(x-y\right)+xy\left(x^2-y^2\right)\right)}{x^2-xy}$