Posted by Albert on Friday, November 13, 2009 at 9:30pm.
If I have a garden that is square with sides of length x feet and next spring I plan to make it rectangular by lengthening one side 3 feet and shortening the other side by 3 feet.
Find a polynomial A(x) that represents the new area.
By how much will the area of the new garden differ from that of the old garden?

Math  Algebra  Reiny, Friday, November 13, 2009 at 9:34pm
Old garden : x by x or x^2
new garden :(x3) by (x+3)
A(x) = (x+3)(x3) or x^2  9
difference = old garden  new garden
= x^2  (x^2  9)
= 9 
Math  Algebra  Albert, Friday, November 13, 2009 at 9:41pm
Thanks a lot. This really helps me understand the problem better. Hope I can help someday! :)

Math  Algebra  allison, Sunday, December 11, 2016 at 9:17pm
well the answer is 142