Subtract.(-2r4 + 9r3 - 3r) - (8r4 - 9r3 + 6r2 - 2r)
A. -10r4 - 6r2 - r
B. -10r4 + 18r3 - 6r2 - r
C. -10r4 - 6r2 - 5r
D. -10r4 + 18r3 + 6r2 - 5r
Answer: B
Mathematics
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