SOLUTION: The area of a rectangle is 91 square inches. It's length is 1 inch les than twice its width. What is the length?

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Question 299970: The area of a rectangle is 91 square inches. It's length is 1 inch les than twice its width. What is the length?
Found 2 solutions by JBarnum, Alan3354:
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
A=91
L=%282W-1%29
A=LW
91=%282W-1%29W
91=2W%5E2-W
0=2W%5E2-W-91 13 and -14 are the 2 numbers that add to get -1 and multiply to get -182=(-91*2)
0=%28W-14%29%28W%2B13%29
0=%28W-14%29 0=%28W%2B13%29
W=14cross%28W=-13%29 cant be negative
L=%282W-1%29
L=%282%2814%29-1%29
L=%2828%29-1%29
highlight%28L=27%29

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: The factors of 91 are 7 and 13.