Use a graphing calculator to approximate the real zeros. Give each zero as a decimal to the nearest tenth.
-$$f ( x ) = x ^ { 4 } - 5 x ^ { 2 } + 6$$
A) $3 , - 3,2 , - 2$
B) $1.7 , - 1.7,1.4 , - 1.4$
C) $1.7,1.4$
D) $- 1,1.8,1.8 , - 1.8$

Question

Quizplus · Accepted Answer

Using a graphing calculator to approximate the real zeros of the function $f(x) = x^4 - 5x^2 + 6$, we find that the zeros are symmetric about the y-axis (due to the even powers of x) and are approximately $1.7, -1.7, 1.4, -1.4$.

Use a Graphing Calculator to Approximate the Real Zeros f(x)=x4−5x2+6f ( x ) = x ^ { 4 } - 5 x ^ { 2 } + 6f(x)=x4−5x2+6

Use a Graphing Calculator to Approximate the Real Zeros $f ( x ) = x ^ { 4 } - 5 x ^ { 2 } + 6$