Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(5x5 - 3x3 + 2x) + (4x5 + 8x3 + 7x)
A. 23x9
B. 9x5 + 5x3 + 9x
C. 6x5 + 13x3 + 4x
D. 9x + 5x5 + 9x3
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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