Respuesta :

Answer:

(x+4)(x-4)

Step-by-step explanation:

Here is a simple help for when you can take a square root of both terms:

(x+(squareroot)) x (x-(squareroot))

x times x = x^2

4 x -4 = -16

This is just a learned skill, most often from Alg 2, Alg 2 w/ trig, and Precal!

Hope this helps!

mileidisv34

Answer:

Since both terms are perfect squares, factor using the difference of squares formula,

a

2

−

b

2

=

(

a

+

b

)

(

a

−

b

)

a

2

-

b

2

=

(

a

+

b

)

(

a

-

b

)

 where

a

=

x

a

=

x

and

b

=

4

b

=

4

.

(

x

+

4

)

(

x

−

4

)

Step-by-step explanation:

I hope you can read this my computer keeps doing this

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