$2x^2-3x+10$

$\left(\frac{a^{2x}a^{-y}}{a^{3x}+y}\right)$

$[\left(\frac{2}{3}\right)\left(\frac{3}{5}\right)]^{-1}\cdot\left(\frac{5}{2}\right)^{-2}+\left(\frac{5}{3}\right)^{-1}$

$\sin\left(x\right)=\frac{\sqrt{10}}{10}$

$\frac{3}{5}=\frac{a+5}{25}$

$abc\:x\:cd$

$3\left(x-6\right)-8\left(x-4\right)>2\left(7x-7\right)$