Algebra

Let's first combine all like terms and see what we get. We have

$x^{2}+18x+3$

Now, we simply complete the square for x. Adding and subtracting 81, we get

$x^2+18+81-81+3\\ (x+9)^2-78$

Thus, the first blank is 1, the second blank is 9, and the third blank is -78. 

So that is our final answer. 

Thanks! :)