$25x^2y-35xy^2$

$\frac { ( x ^ { 2 } ) ^ { 3 } ( x ^ { 3 } ) ^ { 2 } } { ( x ^ { 3 } ) ^ { 4 } }$

$x4+y\left(\frac{6}{3}\right)^2$

$\left[\ln\left(x\right)-y\right]dx-\left(x+1\right)dy=0$

$\lim_{x\to0}\left(\frac{3x}{2\sqrt{x+9}-6}\right)$

$-2x-2<7\cdot\left(3x-4\right)$

$68.5+27$