Answer:
x² + 6x + 9 = (x + 3)(x + 3)
Explanation:
It is given a quadratic equation
x² + 6x + 9
To find the factors of given expression
By using middle term splitting
Let f(x) = x² + 6x + 9
= x² + 3x + 3x + 9
= x(x + 3) + 3(x + 3)
= (x + 3)(x + 3)
Therefore the factors of x² + 6x + 9
(x + 3)(x + 3)