$\int\left(\frac{4x-1}{\left(x+1\right)\left(x-3\right)\left(x+3\right)}\right)dx$

$lny=ln\left[\left(x^5+2\right)^2\left(x^3+4\right)^4\right]$

$\frac{x^2}{4}+xy+y^2$

$\int\frac{7}{5}\cos\left(4x^2-x+8\right)\left(8x-1\right)dx$

$\sqrt [ 4 ] { x ^ { 8 } y ^ { 12 } }$

$\cos^2b+\left(1+\sin b\right)^2=2$

$n^2-n+36$