Factoring( from Lial's introductory algebra)

[ElminNJ]

A 9in by 12in picture is to be placed on a cardboard mat so that there is a equal border around the picture. The area of the finished mat and picture is to be 208 square inches. How wide will the border be?

 

[Deleted member 4993]

A 9in by 12in picture is to be placed on a cardboard mat so that there is a equal border around the picture. The area of the finished mat and picture is to be 208 square inches. How wide will the border be?

Start with naming things to find.

For example - you need to find width.

So let the width of the border = x

Please share with us your work, indicating exactly where you are stuck - so that we may know where to begin to help you.