Hi,

A rectangular area is enclosed with fencing 

where the width is 5 feet less than the length. width is .  

If the area is 300 square feet, what is the width?



 A = lw = x(x-5) = 300ft^2

    x^2 - 5x - 300 = 0

    (x +15)(x-20) = 0   |tossing out the negative solution for unit measure

             x = 20ft, the length and the width is 15ft        .  



 

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