$\left(5y-3\right)\:\left(y+4\right)$

$\left(10+5i\right)\left(-2+8i\right)$

$\frac{dx}{dy}-8y=0$

$\frac{d}{dx}5x^2-3x+4$

$\int_{-\infty}^0\left(\frac{1}{-11x+24+x^2}\right)dx$

$\frac{\left(3x^2+5\right)}{\left(\left(x-1\right)\left(x+1\right)^2\right)}$

$\left(2x-y\right)\left(3x+y\right)$