$-3a^2b^3\left[7b^2-6b+19\right]$

$\left(x+3\right)\left(x-1\right)\left(x-5\right)$

$-7x^2+12x+36$

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

$tan\left(x\right)sin\left(x\right)=2sin^2\left(x\right)$

$\left(1\:+\:cos\left(x\:+\:y\right)\right)\:+\:cos\left(x\:+\:y\right)\frac{dy}{dx}=\:0$

$5-\left[-3-\left(4-7\left(3\right)-9\right)\right]+6$