Zadanie [(x+y)^3*(x+y)^{-4}]^2:[(x+y)^3]^{-6}
źródło:
[(x+y)^3*(x+y)^{-4}]^2:[(x+y)^3]^{-6}=
=[(x+y)^{3-4}]^2:[x+y]^{-18}=(x+y)^{-2}:(x+y)^{-18}=
=(x+y)^{-2-(-18)}=(x+y)^{-2+18}=(x+y)^{16}