X2  + 10x

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter3: Solving Equation And Problems
Section3.7: Costs, Income, And Value Problems
Problem 15P
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Hello,

I am double-checking a test I did, and I realize I do not quite understand the basics of “completing the square”. I thought I had a handle on it, but I am getting stuck. I may be overthinking it. Please can you guide me? I’ve checked Bartleby’s catalog of information, but I came up short on an example with explanations.

Can you please help me understand with a little explanation (or side notes) on how to work out a simple one? I should be able to take it from there. Here’s one from my book:

X2  + 10x

 

Thank you so much.

Coreen.

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