Question

(x + 1)(x-1) =
(x-3) ²=​

Answer 1

Respuesta:

Simplificar

Evaluar

 

1)  (x+1)(x−1)

=(x+1)(x+−1)

=(x)(x)+(x)(−1)+(1)(x)+(1)(−1)

=x2−x+x−1

=x2−1

 2)

(x−3)2

=(x+−3)(x+−3)

=(x)(x)+(x)(−3)+(−3)(x)+(−3)(−3)

=x2−3x−3x+9

=x2−6x+9

Explicación paso a paso: