I'm trying to solve the equality

I can't work out how to get the second solution of x > -1

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- Aug 13th 2008, 08:11 PMCrakafraction equation inequality
I'm trying to solve the equality

I can't work out how to get the second solution of x > -1 - Aug 13th 2008, 08:19 PMQuick
You messed up in your second step. (Crying)

When you multiply both sides of an inequality by a negative number (which happens when x is less than -1) you have to flip the sign, meaning that the second step would actually yield two inequalities:

and

Notice that because then you would have division by zero, which isn't allowed. - Aug 13th 2008, 08:21 PMo_O

(Divided -1 from both sides in that last step there which switches the inequality).

So you have your critical points x = -4 and -1. Test below, in between, and above to see which regions are greater than 0 and you should have your answer. - Nov 27th 2008, 06:15 PMjerome_janetineoualities with fraction