Q.

Which of the following is a constant polynomial?

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a

px=7x+7  

b

px=7

c

px=x+7

d

px=x

answer is B.

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Detailed Solution

We need to find a constant polynomial.
As far as we are aware, a constant polynomial is one with just constant terms and no variables.
px=7  is a constant polynomial with constant term 7 that has no variables.
px=x,x+7,7x+7are linear polynomials with variable x.
So, px=7 is the only constant polynomial.
Hence, the correct option is 2.
 
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