If X = -2 Is a Root Of $x ^ { 3 } + 5 x ^ { 2 } - 4 x - 20 = 0$

question 3

Multiple Choice

If x = -2 is a root of $x ^ { 3 } + 5 x ^ { 2 } - 4 x - 20 = 0$ ,use synthetic division to factor the polynomial completely and list all real solutions of the equation.

• A) \(( x - 5 ) ( x + 2 ) ( x - 2 ) ; x = 5 , - 2,2\)
• B) \(( x + 5 ) ( x + 2 ) ( x - 2 ) ; x = - 5 , - 2,2\)
• C) \(( x + 5 ) ( x + 2 ) ^ { 2 } ; x = - 5 , - 2\)
• D) \(( x + 5 ) ^ { 2 } ( x + 2 ) ; x = - 5 , - 2\)
• E) \(( x + 5 ) ( x - 5 ) ( x - 2 ) ; x = - 5,5,2\)

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