$\left(649\right)\left(-642\right)$

$\left(pw^5-4xr^3\right)\left(pw^5+5x\right)$

$\left(5x^2+2y^2\right)\left(6x+4y\right)$

$\int xsin\left(5x^2\right)dx$

$5\log\left(z\right)-\frac{1}{3}\log\left(x\right)+6\log\left(w\right)$

$7x-6<-5x+1$

$\frac{d}{dx}\left(\frac{\left(x+1\right)^{10}}{\left(4x-16\right)^9}\right)$