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. Choose the correct option:  A) (x + 2y)(3x + 2y)  B) (x + 2y)2 + 2x(x + 2y)  C) (3x + 2y)2 – 2x(3x + 2y)  D) 3x(x + 2y) + 2y(x + 2y)  E) x(3x + 2y) – 2y(3x – 2y)
Others are equal to 3x2 + 8xy + 4y2   Answer x(3x + 2y) – 2y(3x – 2y)
<result>E</result>
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.