$-10\left(-9\:+\:4x\right)\:$

$2e^{\left(2x\right)}-4e^{\left(-x\right)}$

$u\left(3v+w\right)=\left(3v+w\right)u$

$\int\left(\frac{9}{\sqrt{x}}\right)dx$

$\int\left(\frac{\left(5x-13\right)}{\left[\left(x-3\right)\left(x-2\right)\right]}\right)dx$

$2\cos^2\left(x\right)+\cos\left(-x\right)-1=0$

$\int\sin x\sec^2\left(\cos x\right)dx$