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Simplification
The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is
6x2y - 8xy2 + 15y2z
6x2y + 8xy2 - 15y2z
6x2y + 8xy2 - 15y2z - 20xyz
6x2y - 8xy2 + 15y2z + 20xyz
Correct Answer:
6x2y + 8xy2 - 15y2z
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