Special Products Rule 3

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Expand $(11x + y)(11x - y)$

**Answer**

$\;\;\;(11x + y)(11x - y)$

$=(A + B)( A - B) \text{ , where } A = 11x \text{ and } B = y $

$=A^2-B^2$

$=(11x)^2 - (y)^2 $

$=121x^{2} - y^{2} $