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Simplify (3x2 − 3 + 9x3) − (4x3 − 2x2 + 16).
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Simplify (3x2 − 3 + 9x3) − (4x3 − 2x2 + 16).

User Merilyn
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3x^2 - 3 + 9x^3 - (4x^3 - 2x^2 + 16) =
3x^2 - 3 + 9x^3 - 4x^3 + 2x^2 - 16 =
5x^3 + 5x^2 - 19 <===
User Emertechie
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