인수 분해 (2x - y) ^ 3 - (x - 2y) ^ 3 - (x + y) ^ 3

인수 분해 (2x - y) ^ 3 - (x - 2y) ^ 3 - (x + y) ^ 3

(2x x - y) ^ 3 - (x - 2y) ^ 3 - (x + y) ^ 3 = [(2x - y) ^ 3 - (x - 2y) ^ 3] - (x + y) ^ 3 = (2x - y - x x + x + 2y) [(2x - y) & # # 178; + + + (2x x - y) + (x - (x - 2) + (x - 2) & (x - 2 y) # 178; - (x + y) ^ 3 = (x + Y) ^ 3 (x + (x + Y) # ((x + + 7 x & x x x x 8 & x x x x x x x x x & 7 & Y & 17 - 17 x x x x x - 17 - (((# 17 x x x x x x x x x - 7 + Y + Y + 7x & # 178; - 13x y + 7y...