Question

(x+√2)(x-√2)ayudenme

Answer 1

SOLUCIÓN

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Recordemos diferencia de cuadrados

                                   $\boxed{(a+b)(a-b)=a^{2} -b^{2} }$

Entonces

                                         $(x+\sqrt{2})(x-\sqrt{2})\\\\x^2 - (\sqrt{2})^2\\\\\boxed{\boldsymbol{\boxed{x^2-2}}}$