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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Nov 2007 22:08:39 IST
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x^2 + 5|x| + 4 =0
x>=0
|x|=x
x^2 + 5x +4 =0
(x+4)(x+1) =0
x=-4,-1 not possible because we took x>=0
if x<0
|x|=-x
x^2 -5x + 4 =0
(x-4)(x-1)=0
x=1,4 , not possible because we took x<0
so no real roots
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