SOLUTION: the area of a rectangle is 21yd squared and the length of the rectangle is 1yd less than the width. find the dementions of the rectangle

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Question 849419: the area of a rectangle is 21yd squared and the length of the rectangle is 1yd less than the width. find the dementions of the rectangle
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
Hi,

Let x represent the width
(x-1yd)x = 21yd^2
x^2 -x -21 = 0 (Tossing out the negative solution for unit measure)
x+=+%281+%2B+sqrt%28+85+%29%29%2F%282%29+, the width
x+=+%28sqrt%28+85+%29%29%2F%282%29+, the length