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.

What is the key requirement when subtracting two polynomials?

• Subtracting terms with different exponents

• Subtracting terms in any order

• Subtracting terms with the same base and exponent

• Subtracting terms with different bases

What is the purpose of writing polynomials in standard form?

• To confuse students

• To make subtraction easier

• To ensure the highest exponent is first

• To make them look neat

What is a common mistake students make when setting up polynomials vertically for subtraction?

• Forgetting to align like terms

• Adding instead of subtracting

• Using the wrong coefficients

• Multiplying terms

How can subtraction be converted into an addition problem?

• By multiplying terms

• By ignoring the negative sign

• By adding a positive number

• By distributing the negative sign across terms

What is the result of adding n cubed and 7n cubed?

• 10n cubed

• 6n cubed

• 9n cubed

• 8n cubed