$2\left(3a-2\right)+4a=10a-2$

$\int_3^9\left(x\ln\left(x-1\right)\right)dx$

$\left(3k\right)^5\left(3k\right)^4$

$\left(9m^2-12m+4\right)-\left(4m^2-4\right)$

$\left(\cos\left(12\right)\sin\left(3\right)+\sin\left(1\right)\cos\left(3\right)\right)\left(\cos\left(467\right)-\sin\left(46\right)\right)$

$-16t^2+64t+96$

$x^2-3x-20$