Hello from MrBillDoesMath!
Answer:
-2c^3 - 4c^2 + 1
Discussion:
(-7c^3 + 5c^2 + 1) + (5c^3 - 9c^2) = => combine like terms
(-7c^3 + 5c^3) + (5c^2 - 9c^2) + 1 =
Thank you,
MrB
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