SOLUTION: Complete the square to form a true equation? x^2+13x+__=(x+__)^2

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Question 1058932: Complete the square to form a true equation?
x^2+13x+__=(x+__)^2
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
You would be adding a "square piece" to the expression on the left, and show what the "completed" expression will be when factored.

You have a rectangle (yes, you do, even if it is not shown as a figure).
Here are the two sides lengths:
x and x+13

A drawing of the figure is necessary to see all the rest, but cut off a piece %2813%2F2%29x, and reattach just around the corner...., the best way I can say that,... and there will be now a shape ALMOST a square but missing this quantity: %2813%2F2%29%5E2 in square units. That is the square term which you are being asked to add on the left side of your equation for Completing The Square.\

Fill in the left part with %2813%2F2%29%5E2 and fill in the part on the right side with 13%2F2.

Visual explanation for WHAT IS COMPLETING THE SQUARE, https://www.algebra.com/my/Completing-the-Square-Using-Pictures.lesson?content_action=show_dev