3.02 Factoring polynomials

Factor the following expression:

$22y-y^2$22y−y2

Factor the following expression:

$pqr-p^2q^2r^2-p^3q^3r^3$pqr−p2q2r2−p3q3r3

Factor the following expression by taking out the common factor:

$8x\left(10y-z+w\right)-9u\left(10y-z+w\right)$8x(10y−z+w)−9u(10y−z+w)