Question

Is x^ 2 - 16 the difference between two squares? Why?

Answer 1

Answer:

yes, x^ 2 - 16 is equal two (x+4)(x-4), which is a differnce between two squares ot the formula, a^2-b= (a+b)(a-b)

Answer 2

Answer:

x1= -4

x2 = 4

Step-by-step explanation:

Set the equation equal to zero

x2 − 16 = 0

then

(x + 4)(x − 4) = 0

(x+4)= 0 which is equal to -4

and

(x-4)= 0 equals 4