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Question

If xa +1xb is a polynomial and if it is given that a = b, then the value of a is .


Correct Answer
A
\N
Your Answer
B
1
Your Answer
C
-1
Your Answer
D
2

Solution

The correct option is A \N
xa+1xb=xa+xb
Since a = b,
xa+1xb=xa+xa
For the expression  xa+xa to be a polynomial, a and -a must be whole numbers.
Thus, a = 0 is the only possibility.

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