$\lim_{x\to\infty}\left(\frac{\ln\left(x\right)^4}{\ln\left(x+1\right)^4}\right)$

$5x^2+y-3x^2$

$\sin\left(x\right)\cos\left(x\right)\left(1+\tan^2\left(x\right)\right)$

$\frac{dy}{dx}=6e^{\left(x-y\right)}$

$\left(2+x+2x^2\right)^4$

$3x^2-2x-7$

$\left(\sqrt{10c}\right)^2$