SOLUTION: Solve the inequality. Write the solution set in interval notation.
x3 + 4x2 - 4x - 16 ≥ 0
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Question 897231: Solve the inequality. Write the solution set in interval notation.
x3 + 4x2 - 4x - 16 ≥ 0
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Solve the inequality. Write the solution set in interval notation.
x3 + 4x2 - 4x - 16 ≥ 0
***
x^2(x+4)-4(x+4)≥0
(x+4)(x^2-4)≥0
(x+4)(x+2)(x-2)≥0
number line:
<...-...-4...+...-2...-...2...+...>
solution:
[-4,-2] U [2,∞)
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