Question 1144373
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<pre>
The algorithm works in this way:


    1)  Take the coefficient at the variable of the degree 1.

             (in your case it is " 8 ").



    2)  Take HALF of it.

             (in your case the half is " 4 ").



    3)  Last step is to SQUARE this half.

             What you get, it will be the constant term you are looking for.
</pre>


The algorithm that I presented you, works only for the case, when the leading coefficient at &nbsp;&nbsp;{{{y^2}}}  &nbsp;&nbsp;is equal to 1.

But it is exactly your case.


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If you need to develop your knowledge on completing square, &nbsp;look into the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/Learning-by-examples-on-HOW-TO-complete-the-square.lesson>HOW TO complete the square - Learning by examples</A> 

in this site.


You will find there many examples of solved problem by this method - your &nbsp;TEMPLATES.



Also, &nbsp;you have this free of charge online textbook in ALGEBRA-I in this site

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson>ALGEBRA-I - YOUR ONLINE TEXTBOOK</A>.


The referred lesson is the part of this textbook under the topic &nbsp;"<U>Quadratic equations</U>". 



Save the link to this online textbook together with its description


Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson


to your archive and use it when it is needed.