$3\left(2x+1\right)+3\left(x-2\right)=8x$

$\left(\sqrt{6}\:+\:\sqrt{2^2}\right)\:+\:\left(\sqrt{6}\:-\:\sqrt{2^2}\right)$

$3x^2+343>0$

$\left(x+9\right)\left(y+9\right)$

$\left(x+5\right)^2\left(x+1\right)^2$

$-3\left(-2^2\right)\left(6\right)$

$1+2\csc\left(x\right)-\csc^2\left(x\right)$