Posted by Anonymous on .
a rectangle has an area of ( x3+x210x+8) square meters, and a width of (x+4) meters. Find its length.

algebra 2 
Reiny,
You probably meant to say
x^3+x^210x+8
since area = l x w
x^3+x^210x+8 = length(x+4)
length = (x^3+x^210x+8)/(x+4)
= x^2  3x + 2
(I used synthetic division, you could also use long algebraic division)