X2  + 10x

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter8: Polynomials
Section8.3: Multiplying Polynomials
Problem 44PPS
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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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