$\frac { 42 y ^ { 9 } y ^ { 2 } } { 7 x ^ { 5 } y ^ { 2 } }$

$x^{\left(3x+1\right)}^{\frac{1}{2}}$

$\int\tan\left(x\right)\sqrt{\ln^2\sec\left(x\right)}-4dx$

$ab\cdot5a^2b^3$

$-\frac{1}{5}ab-\frac{1}{6}ab-\frac{1}{2}ab-\frac{1}{12}ab-\frac{1}{9}ab$

$5x^2=9x$

$\frac{120}{0.2}$