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

a^2 + b^2 doesn't factor rationally.

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Q: How do you factor the sum and difference of two squares?
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How do you factor 121a2 plus 144b2?

There is a formula for the difference of two squares. The sum of two squares doesn't factor.


How do you factor X squared plus 36?

x2 + 36 cannot be factored. You can only factor the difference of two squares, not the sum.


What are the kinds of factor?

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How do you binomials?

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What is a binomial factor?

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