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Solve the Inequality $x ^ { 3 } + 3 x ^ { 2 } - 9 x \leq 27$

Question 171

Multiple Choice

Solve the inequality. Write the solution set in interval notation.
- $x ^ { 3 } + 3 x ^ { 2 } - 9 x \leq 27$

A) $[ 3 , \infty )$
B) $[ - 3,3 ]$
C) $( - \infty , - 3 ] \cup [ 3 , \infty )$
D) $( - \infty , 3 ]$

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