$log\left(x\right)+log\left(y\right)-3log\left(x\right)$

$\left(a+b\right)^3\left(a+b\right)^1$

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

$\frac{9+y^2}{3+y}$

$\left(x^2-2x+3\right)\left(x^2-2x-5\right)-\left(x^2-2x+5\right)\left(x^2-2x-7\right)$

$\frac{1}{3}-x>4-3x$

$2\left(3\right)^4$