Learn how to factor quadratics that have the "difference of squares" form. For example, write x²-16 as (x+4)(x-4). Learn how to identify this form in more elaborate expressions. For example, write 4x²-49 as (2x+7)(2x-7).
7513_Factoring_difference_of_squares_leading_coefficient_1.html
7514_Factoring_difference_of_squares_analyzing_factorization.html
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