Final answer:
To find the factors of the quadratic equation x²+18x+81=0, we need to solve for the values of x that make the equation equal to zero. The factor of the equation is (x+9).
Step-by-step explanation:
To find the factors of the quadratic equation x²+18x+81=0, we need to solve for the values of x that make the equation equal to zero. We can do this by factoring or by using the quadratic formula.
Factoring the equation, we can rewrite it as (x+9)(x+9)=0, which means x=-9 is the only solution. Therefore, the factor of the equation is (x+9).