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The length of a rectangle is 8 inches greater than its width find the width of the rectangle if its area is 105 sq inches?
Wiki User
∙ 13y ago
Let the length be (x+8) and the width be x:
length*width = area
(x+8)*x = 105 sq inches
x2+8x = 105
x2+8x-105 = 0
Solving the above quadratic equation works out as :
x = -15 or x = 7 it must be the latter because dimensions can't be negative.
Therefore: width = 7 inches and length = 15 inches
Check: 7*15 = 105 sq inches
Wiki User
∙ 13y ago
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