Using the section of the graph shown, which of these potential roots of the function should you test first?f(x) = 2x3 – 9x2 – 6x + 40

Test each proposed value by substituting it into f(x). For x = −2, f(−2) = 2(−2)³ − 9(−2)² − 6(−2) + 40 = −16 − 36 + 12 + 40 = 0. Since the function equals zero, −2 is a root, so test choice B, −2, first.

AI-written and checked against the verified answer.