SOLUTION: Please Help Me Solve This Word Problem: the length of a rectangle is 8 inches greater than its width. find the width of the rectangle if its area is 105 square inches. ?

Question 423020: Please Help Me Solve This Word Problem: the length of a rectangle is 8 inches greater than its width. find the width of the rectangle if its area is 105 square inches. ?

Answer by Gogonati(855) (Show Source): You can put this solution on YOUR website!
Solution: Denote x inches the width. Than its length is: x+8 inches.
Since its area is105 square inches we write the equation:
x*(x+8)=105 => =>
The final equation is a quadratic equation. Use the quadratic formula to solve it.

The root of the equation is x=7.
Answer: the width is 7 inches and the length is 7+8=15 inches.
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