Question 552394
width =8 
length = 12

increase both by same amount x
8 +x & 12 +x

Area = L*W

Area = 221 sq. ft
221= (8+x)(12+x)

221 = 96 +8x+12x+x^2

221-96=x^2+20x
125=x^2+20x
x^2+20x-125=0
x^2+25x-5x-125=0
x(x+25)-5(x+25)=0
(x+25)(x-5)=0
x=5 OR -25
neglect the negative
x= 5 the width increase

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