Square Roots of Quadratic Equations - Definition & Examples

Catie is preparing boxes of cookies to give out to her friends and family during the holiday season. For easy counting, she has arranged the boxes into rows and columns, with an equal number of boxes in each row and column. She wants to put $x$ chocolate chip cookies, $y$ gingerbread men, and $z$ candy canes in each box. $\\$ If she has $16(x+ y+ z)$ items total, how many boxes will be in each row?