x squared - 9
factor
x^2 - 9
Difference of squares
(x+y)(x-y) = x^2-y^2
x^2 = x^2
y^2 = 3^2
So, we get (x+3)(x-3) as the answer.
To factor the expression x^2 - 9, you can use the difference of squares formula. This formula states that a^2 - b^2 can be factored as (a + b)(a - b).
In this case, a = x and b = 3. So, we can rewrite the expression as (x + 3)(x - 3). Therefore, the factored form of x^2 - 9 is (x + 3)(x - 3).