Question 521397
let x be the width

Area = L*W

Area = 1288=96
double  area = 192


(8+2x)(12+2x)= 192

8(12+2x)+2x(12+2x)=192

96+40x+4x^2=192

4x^2+40x-96=0
/4
x^2+10x-24=0
x^2+12x-2x-24=0
x(x+12)-2(x+12)=0
(x+12)(x-2)=0

x the width = 2 inches

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