<PRE><B>Question 343980</B>
Hello, 
Let&#39;s have x represent the width. Now we can set up an equation as:
x(2x+1)=105
Multiply this out to get:
2x^2+x=105
Subtract 105 from both sides to get:
2x^2+x-105=0 
This can be factored to:
(2x+15)(x-7)=0
Solve for x to get:
x=7
x=-15/2
Obviously, only 7 works as the answer so the width is:
7 cm and length is 15 cm
Make sense?
RJ
www.math-unlock.com</PRE>