Simplify the rational expression $\frac{m^2-100}{m-10}$m2−100m−10, for $m\ne10$m≠10.
Simplify the rational expression:
$\frac{m^2-1}{1+m}$m2−11+m
Factor and simplify $\frac{a^2-81}{9-a}$a2−819−a.
Simplify $\frac{x^2+8x+16}{\left(x-5\right)\left(x+4\right)}$x2+8x+16(x−5)(x+4).