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To subtract (-5t^3 + 4t^2 - t) - (8t^2 + t), we can combine like terms:
First, distribute the negative sign to the terms inside the parentheses:
-5t^3 + 4t^2 - t - 8t^2 - t
Next, combine like terms:
-5t^3 + (4t^2 - 8t^2) + (-t - t)
Simplify:
-5t^3 - 4t^2 - 2t