Add. 

+  +  -- -+     --                                                                    



A. 3a3 - 4a2 - 10a

B. 4a3 + 4a2 - 9a

C. -3a3 - 7a2 - 9a

D. 3a3 - 4a2 - 9a

E. 3a3 + 4a2 - 10a


Answer: D

Mathematics

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