SOLUTION: Please help solve. If the sides of a square are lengthened by 7cm, the area becomes 121 cm^2. Find the length of a side of the original square. The length of a side of the ori

Question 150433: Please help solve.
If the sides of a square are lengthened by 7cm, the area becomes 121 cm^2. Find the length of a side of the original square. The length of a side of the original square is ___________cm.
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!
Let's make "x" = side of the orginal square.
Since the is given when the sides are lengthened by 7cm, we'll use this condition in solving for "x". So the sides will be , and going to our formula for of square,

--------->
------>
2 values,
, don't use since "negative"
, USE THIS DISABLED_event_ONE= ORIGINAL LENGTH
It just makes sense to have this length. Why?
Simply,

Thank you,
Jojo

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