SOLUTION: The lenght of the rectangular floor measures 8m longer than it's width. The area of the floor is 124m square. What is the width of the floor? How about the length?

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Question 1168914: The lenght of the rectangular floor measures 8m longer than it's width. The area of the floor is 124m square. What is the width of the floor? How about the length?
Answer by ikleyn(52785) About Me  (Show Source):
You can put this solution on YOUR website!
.

From the condition,


    w*(w+8) = 124  square meters.


    w^2 + 8w - 124 = 0.


Apply the quadratic formula.

If you don't know the quadratic formula, learn about it from the lessons
    - Introduction into Quadratic Equations
    - PROOF of quadratic formula by completing the square
in this forum.