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Mathematics

Algebra

Easy

Question

Let $f left parenthesis x right parenthesis equals x squared plus b x plus c$ , where $b comma c element of R$ . If f(x) is a factor of both $x to the power of 4 plus 6 x squared plus 25$ and $3 x to the power of 4 plus 4 x squared plus 28 x plus 5$ then the least value of f(x) is

2
3
5/2
4

The correct answer is: 4

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