Q: Four of the following five parts numbered (a), (b), (c), (d) and (e) in the following equation are exactly equal. Which of the parts is not equal to the other four? The number of that part is the answer.\nOptions:\n(A) xy2 – x2y + 2x2y2\n(B) xy2(1 – 2x)  + x2y(2y – 1) \n(C) xy2(1 + x)  – x2y(1 – y) \n(D) xy[y(1 + x)  – x(1 – y) ]\n(E) xy(y – x + 2xy)  Let's give some random thoughts before answering.
User
The other parts are equal to xy2 – x2y + 2x2y2.
Therefore, the answer is (B).
Assistant