(5x4y2 + 6x3y - 7y) - (3x4y2 - 5x3y - 6y + 8x)
Chapter 5, Problem 48(choose chapter or problem)
(5x4y2 + 6x3y - 7y) - (3x4y2 - 5x3y - 6y + 8x)
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