punkmartin38
punkmartin38 punkmartin38
  • 12-12-2022
  • Mathematics
contestada

13a ^2+14-17a-12a ^2+12a+6a-a^ 2

(A) a-14
(B) a+14
(C) -9a^2+14
(D) -9a^2-5a-14.

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