calculus

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solve the following inequality. write your solution in interval notation.

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

• calculus -

Get you started you have to start by guessing
X=3 works
Then do long division
Factor
(X+6)(x+6)
3and -6 are your critical values
Now you have to test the different regions

• calculus -

how do I test the different regions??

• calculus -

Just pick a number in the region
Plug back into the function
Neg ans means less than 0
Pos ans means greater than 0

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