I need to find the length and width

Algebra
Tutor: None Selected Time limit: 1 Day

The length of a rectangle is 3 centimeters more than the width. If both the width and length were doubled, the area would be 112 square centimeters. Find the dimensions of the original rectangle

Oct 20th, 2015

Thank you for the opportunity to help you with your question!

let x represent the width of the rectangle

length=x+3

area = 2(x)*2(x+3)=112cm^2

4x^2+12x=112cm^2

x^3+3x=28

x^3+3x-28=0

solving for x = 28

width =28

length=31


Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 20th, 2015

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