$3tan^2\left(x\right)-sin^2\left(x\right)+4$

$-x^2-8x=-9$

$\left(x-y\right)^2+\left(x-z\right)^2+\left(y-z\right)^2+2\left(x-y\right)\left(y-z\right)$

$\tan\left(x\right)=\sin\left(x\right)\left(\sqrt{\left(1-\sin^2\left(x\right)\right)}\right)$

$\int\frac{\left(2\cdot x\right)}{\left(x^2-2x+2\right)}dx$

$1^2-1^0+1-\left(-1\right)^3$

$\frac{\left(csc^2\theta\:\right)}{sec^2\theta\:\:}$