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April 17, 2014

April 17, 2014

Posted by **Jack** on Wednesday, May 14, 2008 at 12:11am.

(x+16)*(x-19)*(x+3)>0

The soltion set is{x| }

I do not understand this one.

- algebra -
**drwls**, Wednesday, May 14, 2008 at 5:51amThe (x+16)*(x-19)*(x+3) function is zero at x = -16, -3 and 19.

It is >0 if x>19 and also if -16>x>-3

check:

for x = -10, 6 x(-29)x(-7) = +1218

for x=20, 36*1*23 = +828

Somehow you put that into "solution set" language.

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