$\frac{x^3y^7}{xy^3}$

$j^2+22j=5$

$\frac{\sec\left(a\right)}{\sin\left(a\right)}+\frac{\sin\left(a\right)}{\cos\left(a\right)}$

$\lim_{x\to\infty}\left(\frac{ln\left(ln\left(x\right)\right)}{x}\right)$

$\left(a^2-16\right)^2$

$\left(xy+20\right)^2$

$\int\left(3\cos\left(x\right)\right)dx$