Question 380097
wid th = x-3.5
length =x
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Area = l*w
x(x-3.5)=15
x^2-3.5x=15
multiply by 2 
2x^2-7x=30
-30
2x^2-7x-30=0
2x^2-12x+5x-30=0
2x(x-6)+5(x-6)=0
(2x+5)(x-6)=0
x= 6 feet,  the length
x-3.5 
=6-3.5 = 2.5 feet, the width.
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CHECK
Area = l*w
6*2.5 = 15
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m.ananth@hotmail.ca
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