$2\left(a+b\right)-4\left(c-b\right)+\sqrt{c-b}$
$8x^{12}+27z^{18}$
$2+0\cdot x-x^5$
$\lim_{x\to0}\frac{1}{\sin\left(x\right)}-\frac{1}{x}$
$x^2-10x+25\ge0$
$\int\frac{1}{\left(x+1\right)\left(x^2+2x+3\right)}dx$
$\left(5xy^2-4xy^2+xy-5\right)+\left(8xy^2-5xy-12\right)+\left(6x^2y-9xy^2\right)$
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