Add the polynomials. Express your answer in standard form.(4x2 + 5x + 20) + (-6x2 - 8x - 9)

A. -2x2 + 3x + 11
B. -2x2 + 11x + 29
C. -2x2 - 3x + 29
D. -2x2 - 3x + 11


Answer: D

Mathematics

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