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Combine the like terms to simplify the expression: . . . . 4 + 7xy2 + 5y3 + 10x –4xy2 – 8x – 4y3 + 9. . . . A.. . . y3 – 3xy2 + 2x + 9. . . B.. . . y3 + 3xy2 + 10x + 13. . . C.. . . y6 + 3x2y2 + 10x + 13. . . D.. . . y3 + 3xy2 + 2x + 13.

Answer :

meerkat18
Combine the terms with the same variables.
                      4 + 7xy² + 5y³ + 10x - 4xy² - 8x - 4y³ + 9
                  (5y³ - 4y³) + (7xy² - 4xy²) + (10x - 8x) + (4 + 9) 
                             y³ + 3xy² + 2x + 13
Thus, the answer is letter D. 

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