Question

If two roots of a cubic polynomial x
3 − ax
2 − bx + 60 are 4 and 5. Which of the following is the

third root of the given polynomial? (Note: we don’t need to find values of a and b here)
(A) −5 (B) −4 (C) 3 (D) −3

Answer 1

Answer:

3-a =3

2-b=2+6= 8

8+4= 12+5= 17answer

-5 is 5

-4 is 4

3 is 3

-3 is 3