How to factor expressions that follow the difference of squares pattern

Difference of squares intro | Mathematics II | High School Math | Khan Academy · 4:53 · Video: Khan Academy · Watch at the source

In short: This video explains the difference of squares, a specific algebraic pattern where an expression takes the form a²-b². Understanding this structure allows you to factor these expressions into (a+b)(a-b) quickly and reliably.

The difference of squares method relies on the identity (a+b)(a-b)=a²-b². By recognizing when an expression fits this pattern, you can simplify the factoring process. For instance, the expression x²-25 can be factored directly into (x+5)(x-5).

You can verify this pattern by expanding the parentheses in the product (a+b)(a-b). This algebraic technique is a fundamental tool for simplifying polynomials.

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