Difference of two squares |
Source: Wikipedia, the free encyclopedia The above identity can be easily proven, since This identity is one of the most commonly used in mathematics and the variables a and b can be replaced by any expression to factor more complex binomials:
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Repeated use of factoring by the difference of two squares: |
The identity can be applied more than once if the resulting expressions have the form of a difference of two squares: Here the second binomial was factored since it's a difference of two squares |