Renesito,
Se trata de una diferencia de cudrados. Responde a a^2 - b^2 = (a + b)(a - b)
x^2 - 121 = (x + 11)( x - 11)
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Renesito,
Se trata de una diferencia de cudrados. Responde a a^2 - b^2 = (a + b)(a - b)
x^2 - 121 = (x + 11)( x - 11)