The expression represents the width of the rectangle is, [tex](11+x)[/tex]
Area of Rectangle:
Area of rectangle is computed by multiplication of length and width of rectangle.
Given that, Area,[tex]A=121-x^{2} ,length=11-x[/tex]
[tex]Area=length*width\\\\121-x^{2} =(11-x)*width\\\\width=\frac{121-x^{2} }{11-x}=\frac{(11-x)(11+x)}{11-x} =11+x[/tex]
Learn more about the Area of rectangle here:
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