Yes, it's me again and I need more help. This time I couldn't do anything with this problem because I really did not understand this one. Here is the problem: (x+6)(x-16)(x+5)>0; The solution set is (xl ).

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- May 25th 2008, 05:07 PMlizannHelp with inequalities
Yes, it's me again and I need more help. This time I couldn't do anything with this problem because I really did not understand this one. Here is the problem: (x+6)(x-16)(x+5)>0; The solution set is (xl ).

- May 25th 2008, 05:19 PMmr fantastic
- May 25th 2008, 05:34 PMKrizalid
Make the following table:

http://img181.imageshack.us/img181/4...9460e7djr6.gif

- In the first column, identify the factors and the expression that you want to analize.
- Following up on this, find where the expressions get zero and identify every interval as it's written above.
- Pick a number of the interval and substitute it into the factors to see the sign in such interval.
- Finally multiply vertically to see the sign of the whole expression.

We require the positive sign, so the solution set is $\displaystyle S=(-6,-5)\cup (16,\infty ).$ - In the first column, identify the factors and the expression that you want to analize.
- May 25th 2008, 06:30 PMlizannThank you
Thanks for the help very much appreciated.(Hi)