Tuesday

March 31, 2015

March 31, 2015

Posted by **allison-please help!!!** on Tuesday, December 25, 2012 at 6:27am.

x^3+9x^2-108 less or equal to 0.

Then write your solution in interval notation. I am sooo confused and do not have any idea how to do this. Can someone please show me step by step please???

Thanks in advance. Someone who is confused.

- college algebra -
**Damon**, Tuesday, December 25, 2012 at 7:24amThis polynomial graphing might help sometimes:

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

zeros at x = -6 (double zero) and x = +3

so we really have

(x+6)(x+6)(x-3)

It is negative for large negative x

it comes up and bounces off the x axis at x=-6, dropping down negative again

it does not actually come up and cross the x axis until x = 3

from then on it is positive,

therefore negative for

x</= +3 except for touching zero at x = -6

**Answer this Question**

**Related Questions**

calculus - solve the following inequality. write your solution in interval ...

calculus - solve the following inequality. write your solution in interval ...

algebra URGENT HELP - analyze the graph of the following function solve R(x)=x(x...

precalculus - solve the inequality algebraically. write the solution in interval...

calculus--please help!! - Solve the inequality. x^3+9x^2-108 less than or equal ...

calculus - I have posted this question earlier and had the answer given to me ...

Math - Solve the inequality by first rewriting it as an equivalent inequality ...

College algebra - use interval notation to express the solution set of the ...

algebra 2 - 1. 5x+2>3x+10 =x>4 2. 8+2x< or equal too 6x-20 x> or ...

college algebra - solve the following inequality. write the answer in interval ...