Question 880702
{{{(2x-3y)^3}}}



{{{(2x-3y)(2x-3y)(2x-3y)}}}



{{{(2x-3y)(4x^2-6xy-6xy+9y^2)}}}



{{{(2x-3y)(4x^2-12xy+9y^2)}}}



{{{2x(4x^2-12xy+9y^2)-3y(4x^2-12xy+9y^2)}}}



{{{8x^3-24x^2y+18xy^2-12x^2y+36xy^2-27y^3}}}



{{{8x^3-36x^2y+54xy^2-27y^3}}}



So the third term is {{{54xy^2}}}