SOLUTION: What are the dimensions, in feet, of a rectangular sign whose area is 55 square feet, whose length is given by x + 8, and whose width is given by x + 2?

Question 478929: What are the dimensions, in feet, of a rectangular sign whose area is 55 square feet, whose length is given by x + 8, and whose width is given by x + 2?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Start with the formula for the area of a rectangle of length L and width W:
Substitute , , and to get:
Simplify.
Subtract 55 from both sides.
Factor.
Apply the "zero product" rule.
or so...
or Discard the negative solution as length and width are positive values.

Substitute

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