$x+38=5x-6$

$\frac{1}{2}\log\left(4x+1\right)+\frac{1}{2}\log\left(x-3\right)-\log\left(x^4-x^2-7\right)$

$\frac{e^2cos^2x}{x^2+x+1}$

$1x^2+26x+169$

$\frac{1}{\cos\left(x\right)}-\frac{\cos\left(x\right)}{1+\sin\left(x\right)}=\tan\left(x\right)y$

$2y^2-22y+48$

$\sqrt[3]{\left(x^2-1\right)^2}$