The area of the banner, expressed in simplest form, is: (9 + 3x) ft²
The banner given in the image below has a rectangular shape. So, the area of the banner will be determined using the area of a rectangle.
Area of the banner = (3 + x)3
Area = (9 + 3x) ft²
Therefore, the area of the banner, expressed in simplest form, is: (9 + 3x) ft²
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