Factoring the Difference of Two Squares

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Definition of the difference of two squares

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The difference of two squares is a squared number subtracted from another squared number.

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General formula for factoring the difference of two squares

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a^2 - b^2 = (a + b)(a - b)

Front

Example of factoring the difference of two squares

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For example, x^2 - 9 can be factored as (x + 3)(x - 3).

Front

Application of the difference of two squares

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This method is used to simplify expressions and solve equations.