$\:f\left(x\right)=\left(4x\right)^{ln4x}$

$\left(9b+4c\right)^2$

$\frac{dy}{dx}\tan\left(x\right)=2y-8$

$\int\left(\frac{1}{e^{x}+4}+\frac{1}{1+\sen\left(x\right)}\right)dx$

$\sqrt{\frac{t+5}{t-5}}$

$\frac{8x^{3}-2x^{2}-12x+2}{4x^{3}-2x^{2}-12x+2}$

$\left(xy+x\right)dy=\left(x^2+1\right)dx$