I'm getting x+y = 1096500/529979????
a is clearly 3, b is 7, and c is 11 so c+1/a is 34/3.
What happened to the "Blocked by Moderator" images?
a) 200*2^3 - 1600
b) 200*2^12 = 819200
The quadratic is ax^2+ax+b and for this to be a perfect square, it must be (sqrtax+sqrtb)^2 which is ax^2+b+2sqrt(ab)x so we have 2sqrtab=a which means 4ab=a^2 so a/b = 4.
(1/2)^4=1/16
Vietas, sum of reciprocals is x+y/xy and x+y is -b/a and xy is c/a so x+y/xy is -b/c
-6,-5,-4,-3,-2,-1,0,1,2,3 so 10
\(\frac{1+2+ \ldots 12}{12} = 6.5\)