Question

(x-4) (x+4)= ?
Please solve this question​

Answer 1

(X^2-4^2)

It is using identity.

a^2-b^2=(a-b)(a+b)

Answer 2

Answer:

$x^{2}$ - 16

Step-by-step explanation:

Let's use the formula : (a+b)(a-b)=$a^{2}$ - $b^{2}$

So

(x-4)(x+4) = $x^{2}$ - $4^{2}$

= $x^{2}$ - 16