Perform the indicated operations and write the resulting polynomial in descending order of degree.-(r4 - 5r2 + 5r + 3) - (3r4 - 6r3 - 8r - 2) + (-r4 + 2r3 + 6r2 + 3r - 2)
A. -5r4 + 8r3 + 11r2 + 6r - 3
B. -5r4 + 8r3 - 11r2 + 6r + 3
C. -5r4 + 8r3 + 11r2 + 16r - 3
D. -5r4 - 8r3 + 11r2 + 6r - 7
Answer: A
Mathematics
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