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OpenStudy (steve816):
Please help me solve the inequality!
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OpenStudy (steve816):
\[x^3-x^2-72x >0\]
OpenStudy (steve816):
I solved for x and got x = 0, 9, -8 Not sure what to do from there.
jimthompson5910 (jim_thompson5910):
so you solved x^3 - x^2 - 72x = 0 for x and you got x = 0, x = 9, x = -8 ??
OpenStudy (steve816):
Yes
jimthompson5910 (jim_thompson5910):
ok first draw a number line and plot those three values on it |dw:1440998491371:dw|
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jimthompson5910 (jim_thompson5910):
|dw:1440998528778:dw|
jimthompson5910 (jim_thompson5910):
label the different regions A,B,C,D |dw:1440998552769:dw|
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