$\left(2x+10\right)\:\left(2x-10\right)$

$6a+24$

$\frac{dy}{dx}\left(y=\frac{\left(2x^2+3\right)^2}{\left(x+1\right)^2\left(5x+6\right)}\right)$

$\left[\left(\sin\left(x\right)+\cos\left(x\right)\right)-1\right]\cdot\left(tan\left(x\right)+cot\left(x\right)\right)$

$\left(2x^4y^3\right)^4$

$\lim_{x\to infinity}\left(\frac{7x^3-2x^2}{4x^2-x+10}\right)$

$\frac{\left(2x\right)}{\left(x-6\right)}-\frac{\left(3x\right)}{\left(x^2-5x-6\right)}$