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Astute
Hey there!

As we do [tex]\boxed{(124^2)} \ that \ would \ us \ (15,376)[/tex]

Your correct answer would be. . .

[tex]\boxed{\boxed{124}}[/tex]

Hope this helps.
~Jurgen
Hi There!!!! Great day!?

The correct answer is 124.
 
15,376 is a perfect square→ 124 x 124 = 15,376 

Hope my answer helped u out ;)

~TRUE BOSS