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Question

The value of the polynomial 5x4x2+3, when x=1 is
A) 6
B) 6
C) 2
D) 2

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Solution

The answer is A (6).
Given p(x)=5x4x2+3 ...(i)
On putting x=1 in eq.(i) we get,
p(1)=5(1)4(1)2+3
=54+3
p(1)=6


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