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

$\csc\left(x\right)+\cot\left(x\right)\cdot1-\cos\left(x\right)$

$64m^2-25$

$\lim_{x\to0}\left(\ln\left(\left|x\right|\right)\right)$

$\left(\sqrt{x}+5\right)\left(\sqrt{x}-7\right)$

$3+\tan^2\left(x\right)=\frac{1}{\cos^2\left(x\right)}$

$\left(x^3+6x^2-4x-7\right)-\left(3x^2+2x-4\right)$