Add the polynomials.(5x7 + 4x4 - 8) + (6x7 - 7x4 + 5)

A. 5x11
B. -2x7 - 2x4 + 9
C. -3x7 - 3x4 + 11
D. 11x7 - 3x4 - 3


Answer: D

Mathematics

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