Respuesta :

Awnser

3

2

Explanation:

lim

x

1

x

2

x

2

2

x

2

+

2

x

2

x

2

x

2

2

x

2

+

2

x

2

x

+

2

x

2

2

x

+

2

+

2

x

2

=

x

2

+

x

2

4

x

2

2

2

x

2

=

(

x

+

2

)

(

x

1

)

2

(

x

+

1

)

(

x

1

)

=

1

2

(

x

+

2

x

+

1

)

and then

x

2

x

2

2

x

2

+

2

x

2

=

1

2

(

x

+

2

x

+

1

)

2

x

+

2

+

2

x

2

x

+

2

x

2

and then

lim

x

1

x

2

x

2

2

x

2

+

2

x

2

=

lim

x

1

1

2

(

x

+

2

x

+

1

)

2

x

+

2

+

2

x

2

x

+

2

x

2

=

1

2

3

2

4

2

=

3

2