Answer:
-3x³ - 9x² + 3x
Step-by-step explanation:
You are trying to make it simplest form. To do so, note that -3x is outside the parenthesis. -3x is being multiplied to all terms within the parenthesis.
Distribute -3x to all terms within the parenthesis:
-3x(x²) = -3x³
-3x(3x) = -9x²
-3x(-1) = 3x
-3x³ - 9x² + 3x is your simplified form
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