SOLUTION: The area of a rectangular wall of a barn is 42ft. It's length is 8 ft longer than its width. What are the length and width of the wall?

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Question 1107024: The area of a rectangular wall of a barn is 42ft. It's length is 8 ft longer than its width. What are the length and width of the wall?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
L*(L-8) = 42.

L^2 - 8L - 42 = 0.

Solve this quadratic equation using quadratic formula.