Barbara H. answered 03/02/15
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Enthusiastic mathematics teacher and World Record Swim Coach
2x^3y + 5x^2 - 3x - (x^3y - 8x^2y + 11)
2x^3y + 5x^2 - 3x -x^3y + 8x^2y -11
x^3y + 8x^2y + 5x^2 - 3x -11
x^2y(x + 8) + x(5x - 3) - 11