(-x+y)³ berapakah hasilnya

jawabannya (-x+y)³
-x³+y³

(-x+y)³
=( (-x+y) ×(-x+y) )×(-x+y)
=( x^2 -2xy +y^2 ) × (-x+y)
= -x^3+x^2y+2x^2y- 2xy^2-xy^2+y^3
= -x^3 +3x^2y-3xy^2 +y^3

^ = pangkat