SOLUTION: The area of the Room is 55 square feet the length is 6 feet longer than the width find the length and width of the room? i have to put it in as a quadratic formula

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: The area of the Room is 55 square feet the length is 6 feet longer than the width find the length and width of the room? i have to put it in as a quadratic formula       Log On


   

Question 618424: The area of the Room is 55 square feet the length is 6 feet longer than the width find the length and width of the room? i have to put it in as a quadratic formula
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

The area of the Room is 55 square feet the length is 6 feet longer than the width x

 area = l*w = (x+6)x

 (x+6)x = 55ft^2

 x^2 + 6x - 55 = 0

(x+11)(x-5) = 0

       x = 5, throwing out negative solution for unit of measurement

width is 5 and length is 11