Respuesta :

simonasilvestri
According to notable products, when you have to multiply the sum of a binomial(a+b) times the difference of itself (a-b), the result is the difference between the terms of the binomial to the power of 2 (a^2 - b^2)
altavistard

Answer:


Step-by-step explanation:

The reason for this is that the two middle terms, ba and -ba, cancel one another out, leaving only two terms:  a^2 and b^2.

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