Question

(a + 1 )(a - 1 ) - 2 ( a - 1 ) =
(es factorizacion pls aiuda :,v)

Answer 1

Respuesta:$a^{2}$+2a-1

Explicación paso a paso:

(a + 1 )(a - 1 ) - 2 ( a - 1 )

(a+1-2) (a-1)

(a-1)(a-1)

$(a-1)^{2}$

$a^{2}$+2a-1