$1+\sqrt{3}\tan\left(2x\right)=0$

$\int x\frac{\sqrt{t}-3}{\sqrt{t}+1}dx$

$f\left(x\right)=3x^2-4x+10x$

$\ln\left(x\right)+\ln\left(x+1\right)=0$

$\left(a\:+\:9\right)\:\left(a\:+\:6\right)$

$\int x\cos\left(2x+5\right)dx$

$\left(x+5\right)^2>\left(2x-5\right)^2+x\left(x-2\right)\:$