# Algebra Prob.

• Nov 23rd 2008, 02:43 PM
~berserk
Algebra Prob.
is $x^2+4x$ equal to x= ±√4
• Nov 23rd 2008, 03:04 PM
skeeter
depends on what $x^2 + 4x$ is equal to ... did you leave that part out?
• Nov 23rd 2008, 03:16 PM
~berserk
well the original problem is this: http://img149.imageshack.us/img149/3725/19497986mw6.jpg

i am trying to get the factored forms for the top and bottom so i can use sign analysis to determine the answer(s)

maybe it did not show up for you but it says x= plus or minus the squarerootof 4 for the first post
• Nov 23rd 2008, 03:20 PM
skeeter
$\frac{n^2+4n+4}{n^2+4n} > 0$

$\frac{(n+2)^2}{n(n+4)} > 0$

critical values are $n = -2$, $n = 0$, and $n = -4$