Question

problema notable (a-⅑)(a+⅑) ​

Answer 1

Respuesta:

Explicación paso a paso:

$\left(a-\frac{1}{9}\right)\left(a+\frac{1}{9}\right)=a^{2}-\frac{1}{81}\,\,\textsf{usando:}\,\boxed{x^{2}-y^{2}=(x-y)(x+y)}$