Find All Real Zeros of the Polynomial $f ( x ) = x ^ { 3 } + 5 x ^ { 2 } - 4 x - 20$

question 4

Multiple Choice

Find all real zeros of the polynomial $f ( x ) = x ^ { 3 } + 5 x ^ { 2 } - 4 x - 20$ and determine the multiplicity of each.

• A) \(x = - 5 , \text { multiplicity } 2 ; x = - 2 \text {, multiplicity } 1\)
• B) \(x = - 5 , \text { multiplicity } 3\)
• C) \(x = 2 \text {, multiplicity } 1 ; x = - 2 \text {, multiplicity } 1 ; x = - 5 \text {, multiplicity } 1\)
• D) \(x = - 2 \text {, multiplicity } 1 ; x = 5 \text {, multiplicity } 1 ; x = - 5 \text {, multiplicity } 1\)
• E) \(x = 2 , \text { multiplicity } 2 ; x = - 5 , \text { multiplicity } 1\)

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