Question

упростите выражение :
125 х^4 у -225х^3у^2+135х^2у^3-27 ху4
27а^3в-27а^3в^2+9а^3в^3-а^3в^4

Answer 1

125 х^4 у -225х^3у^2+135х^2у^3-27 ху^4=xy(125x³-225x²y+135xy²-27y²)=
=xy(5x-3y)³
27а^3в-27а^3в^2+9а^3в^3-а^3в^4=a³b(27-27b+9b²-b³)=a³b(3-b)³