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QuizMultiple Choice

The Cubing Function — Quiz

Question 1 • Algebraic Reasoning

Graph the function f of x is equal to x cubed minus 4 x minus 1 Which are approximate solutions for x when f of x is equal to 0 ? Choose three correct answers.

Answer
A
negative 0 point 2 5
B
0 point 2 5
C
2 point 1 1
D
negative 2 point 1 1
E
negative 1 point 8 6

Explanation

To find where f(x) = 0, solve x³ − 4x − 1 = 0. The three roots are approximately −1.86, −0.25, and 2.11, so the matching choices are negative 1.86, negative 0.25, and 2.11. The other choices have the wrong sign or are not close to a root.

AI-written and checked against the verified answer.

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