Answer:
Explanation:
Assuming you meant to write (x + 9) * (x + 9), this is a multiplication of two binomials, which can be expanded using the FOIL method:
(x + 9) * (x + 9) = x^2 + 9x + 9x + 81
Simplifying further, we can combine like terms:
x^2 + 18x + 81
Therefore, (x + 9) * (x + 9) = x^2 + 18x + 81.