SOLUTION: Hello, I need help completing the square, I would appreciate your help x^2+dx+49 and x^2+dx+9/4 Thank You!

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Hello, I need help completing the square, I would appreciate your help x^2+dx+49 and x^2+dx+9/4 Thank You!      Log On


   

Question 902578: Hello,
I need help completing the square, I would appreciate your help
x^2+dx+49

and
x^2+dx+9/4
Thank You!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The method is the same for both.
I'll do the first.
You repeat the method on the second.
y=x^2+dx+49
Take the x-coefficient, halve it, square it and add and subtract it to the right hand side.
%28d%2F2%29%5E2=d%5E2%2F4
y=x%5E2%2Bdx%2Bd%5E2%2F4%2B49-d%5E2%2F4
y=%28x%2Bd%2F2%29%5E2%2B%28196%2F4%29-d%5E2%2F4
y=%28x%2Bd%2F2%29%5E2%2B%28%28196-d%5E2%29%29%2F4