Precalc 1.3.2 - Adding & Subtracting Polynomials

Описание: We dive into how to add and subtract polynomials by combining like terms. You’ll learn why grouping like terms is the key to simplifying expressions and how to apply both the horizontal and vertical methods.

We’ll walk through examples step by step, showing how to:

Identify and combine like terms

Use the commutative property to rearrange terms

Add polynomials horizontally by grouping and combining

Add polynomials vertically by aligning like terms

Subtract polynomials by distributing the negative sign and then combining like terms


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What You’ll Learn

The meaning of like terms and how to recognize them

How factoring helps explain combining like terms

The horizontal method of adding and subtracting polynomials

The vertical method of aligning polynomials in standard form

Common mistakes to avoid, like misaligning terms or forgetting to distribute negatives


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Practice Included

We’ll go through several examples together so you can see exactly how to apply these methods. Try pausing the video at each step to work out the problems yourself before checking the solutions.

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