Krzysztof solved the quadratic equation 11x^2-44x-99=0 by completing the square. In the process, he came up with the equivalent equation (x+r)^2 = s,where r and s are constants.What is r+s.
+161 11x^2 -44x - 99 = 0
x^2 - 4x - 9 = 0
x^2 - 4x = 9
x^2 - 4x + 4 = 9 + 4
(x - 2)^2 = 13
( x + -2)^2 = 13
r = -2 s = 13
Now, I am pretty sure you can solve what r+s is.
