$\frac{9\sec^2\left(x\right)-9}{\sec\left(x\right)-1}$

$\frac{2x-12}{x-3}=2x+6$

$9x^2-12x+5$

$\left(c-4\right)\left(c+10\right)$

$\left(6m+\frac{5}{2}\right)^2$

$\int\left(\frac{30}{\left(6x-1\right)^6}\right)dx$

$4\sin\left(x\right)cos\left(x\right)\left(1-2sin^2x\right)=sin\left(4x\right)$