The area of a rectangle is 2r^2+r-12r2+r1. The length is r+1r+1. What simplified expression represents the width?

1 Answer
Mar 4, 2018

width=2r-1width=2r1

Explanation:

I would use synthetic division to divide 2r^2+r-12r2+r1 by r+1r+1. The quotient is 2r-12r1.

In other words,

A=l*wA=lw

A/l=wAl=w

(2r^2+r-1)/(r+1)=2r-12r2+r1r+1=2r1