Use the Zero or Root Feature of a Graphing Utility $f ( x ) = 2 x ^ { 3 } + 8 x ^ { 2 } - 5 x - 7$

question 49

Multiple Choice

Use the zero or root feature of a graphing utility to approximate the zeros of $f ( x ) = 2 x ^ { 3 } + 8 x ^ { 2 } - 5 x - 7$ accurate to the nearest thousandth.

• A)​x = -4.692
• B)​x = -8.492,-0.695,1.186
• C)​x = -3.575
• D)​x = -4.388,-0.720,1.108
• E)​x = -3.910,-0.763,1.173

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