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

question 358

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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