Posted by **Paul** on Thursday, December 27, 2012 at 4:50pm.

Solve the inequality. x^3+9x^2-108 less than or equal to 0.

Then write in interval noation.

Please can you show me step by step on how you got the answer. I have tries and I am very confused.

- calculus--please help!! -
**Damon**, Thursday, December 27, 2012 at 8:28pm
first this software is very handy for polynomials and seeing their graphs:

http://mathportal.org/calculators/polynomials-solvers/polynomial-graphing-calculator.php

- calculus--please help!! -
**Damon**, Thursday, December 27, 2012 at 8:34pm
(x+6)(x+6)(x-3)

so we have double zero at x = -6 (graph comes up from way low and bounces back down off the x axis)

Then it comes back up again and goes positive at x = 3

SO

x^3+9x^2 -108 </= 0 for

x<+3

## Answer This Question

## Related Questions

- college algebra - Solve the following inequality. x^3+9x^2-108 less or equal to ...
- calculus - solve the following inequality. write your solution in interval ...
- algebra - Note: Remember to show all of the steps that you use to solve the ...
- algabra - Note: Remember to show all of the steps that you use to solve the ...
- Algebra - Just wondering if I did this correctly step by step. If not ...
- ONE math question! Check please, thank you! - 6) 108 is 36% of what number? ...
- calculus - solve the following inequality. write your solution in interval ...
- math ergent please please... - 10.a)Solve the inequality x^3-5x^2+2x+8<0 by i...
- Math - A lattice point is a point with integer coordinates. How many lattice ...
- Physics - Can someone please show me step by step how to normalize e^-5x in the ...

More Related Questions