Subtracting two polynomials

The video tutorial explains how to subtract two trinomials by aligning like terms and using two methods: vertical subtraction and converting subtraction into addition. It emphasizes the importance of writing polynomials in standard form and aligning terms with the same base and exponent. The tutorial demonstrates both methods, highlighting potential mistakes and offering a choice based on preference.

Explain how to handle negative signs when subtracting polynomials.

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What is the result of subtracting the polynomials n cubed minus 9n squared plus 2n and negative 7n cubed plus 9n squared minus n?

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