Uprostite donji izraz:
3x-3y2x+2y·x2-y2x2-2·x·y+y2
3(x-y)2(x+y)·x-yx+yx-y2=
=3(x-y)2(x+y)·x-yx+yx-y2
=32
Razlika binoma
a2-b2=a-ba+b
Kvadrat binoma
a-b2=a2-2ab+b2
3x-3y2x+2y·x2-y2x2-2·x·y+y2=32