Use a graphing calculator to approximate the real zeros. Give each zero as a decimal to the nearest tenth.
-$$f ( x ) = 2 x ^ { 3 } + x ^ { 2 } - 14 x - 7$$
A) $- 0.5,2.6 , - 2.6$
B) $0.5,2.6 , - 2.6$
C) $- 2,2.7 , - 2.7$
D) $2,7 , - 7$

Question

Quizplus · Accepted Answer

Using a graphing calculator to approximate the real zeros of the function $f(x) = 2x^3 + x^2 - 14x - 7$, we find that the zeros are approximately $-0.5$, $2.6$, and $-2.6$.

Use a Graphing Calculator to Approximate the Real Zeros f(x)=2x3+x2−14x−7f ( x ) = 2 x ^ { 3 } + x ^ { 2 } - 14 x - 7f(x)=2x3+x2−14x−7

Use a Graphing Calculator to Approximate the Real Zeros $f ( x ) = 2 x ^ { 3 } + x ^ { 2 } - 14 x - 7$