Find the solution set of . The answer they gave was {x : x>4 or -1<x<0 } but my answer was {x : x>4 or x<-1}. Which is right?

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- Jun 15th 2009, 06:14 AMmark1950[SOLVED] Solution Set of another expression?
Find the solution set of . The answer they gave was {x : x>4 or -1<x<0 } but my answer was {x : x>4 or x<-1}. Which is right?

- Jun 15th 2009, 06:23 AMRapha
- Jun 15th 2009, 06:35 AMmark1950
This is how I did it.

Since the expression is > 0, hence, the x values are above the x -axis, right? And since the graph is a "smiling" graph, x > 4 or x < -1. That's how I got it. - Jun 15th 2009, 06:40 AMstapel
- Jun 15th 2009, 06:40 AMmathaddict
- Jun 15th 2009, 06:55 AMmark1950
Oh! No wonder...I got the previous question wrong too. Wow. This is a new concept for me. So, I can't multiply unknowns in inequalities. Thanks, guys!

- Jun 15th 2009, 06:58 AMRaoh
hi(Hi)

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