How to subtract two trinomials polynomials

The video tutorial explains how to subtract polynomials, focusing on vertical alignment and standard form. It covers two methods: direct subtraction and distributing the negative sign before adding. The instructor emphasizes the importance of aligning terms with the same variable and exponent. The tutorial also addresses handling double negatives and provides tips for accurate subtraction.

How do you combine like terms when adding or subtracting polynomials?

What is the significance of having the same variable and exponent when combining polynomial terms?