Express the expression in its simplest form:
$\frac{24mn^2}{15m^2n}$24mn215m2n
Factor and simplify $\frac{50m^2+70mn}{80m^2}$50m2+70mn80m2.
Factor and simplify:
$\frac{x-4}{4-x}$x−44−x
Simplify the rational expression:
$\frac{m^2-1}{1+m}$m2−11+m