NCERT Mathematics Class 9 Exemplar Ch 2 Polynomials Part 3
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15. The value of is
(A)
(B) 477
(C) 487
(D) 497
Answer: D
16. The factorisation of is
(A)
(B)
(C)
(D)
Answer: B
17. Which of the following is a factor of?
(A)
(B)
(C)
(D)
Answer: D
18. The coefficient of x in the expansion of is
(A) 1
(B) 9
(C) 18
(D) 27
Answer: D
19. If, the value of is
(A) 1
(B) –1
(C) 0
(D)
Answer: C
20. If , then the value of b is
(A) 0
(B)
(C)
(D)
Answer: C
21. If , then is equal to
(A) 0
(B) abc
(C) 3abc
(D) 2abc
Answer: C