Question

How would the expression x2 -9 be rewritten using Difference of Squares?

Answer 1

Explanation:

x²-9=x²-3²

Answer 2

(x + 3) (x - 3)

Explanation:

`a^(2) -b^2=(a+b)(a-b)` where a = x and b = 3

x^2 - 3^2 =

x^2 - 9 =

(x + 3)

(x - 3)