2018 · Q13
Which one of the following is a zero of the polynomial 3x³ + 4x² - 7?
Elementary MathematicsAlgebra
- A0
- B1
- C2
- D-1
Explanation
Testing x = 1 gives 3(1) + 4(1) − 7 = 0, so 1 is a zero of the polynomial. The other candidates give −7, 35 and −6, so only option (B) works.