Four of the five parts numbered (a), (b), (c), (d) and (e) in the following equation are exactly equal. Which part is not equal to the other four ? The number of that part is the answer.\nOptions:\n(A) (x + 2y) (3x + 2y) \n(B) (x + 2y) 2 + 2x(x + 2y) \n(C) (3x + 2y) 2 – 2x(3x + 2y) \n(D) 3x(x + 2y)  + 2y(x + 2y) \n(E) x(3x + 2y)  – 2y(3x – 2y)  Now, let's think a bit. Some random thoughts:
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Others are equal to 3x2 + 8xy + 4y2
The final answer: (E).
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