Which of the following expressions is equivalent to \((x+2)(x-2)\)?

Explanation

\((x+2)(x-2)=x^{2} + 2 x-2 x-4=x^{2}-4\)
Note that \((x+2)(x-2)\) is the “difference of two squares”: \(\left(x^{2}-y^{2}\right)\) in the factored form:
\((x+y)(x-y)\), where y = 2

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