Q. 1 E5.0( 2 Votes )

Let us calculate

Answer :

Formula used.


If f(x) is a polynomial with degree n


Then (x – a) is a factor of f(x) if f(a) = 0


1st we find out zero of polynomial x + 1


x + 1 = 0


x = – 1


if f(x) is x4 + x2 + x + 1


then putting x = – 1;


f( – 1) = ( – 1)4 + ( – 1)2 + ( – 1) + 1


= 1 + 1 – 1 + 1


= 2


Conclusion.


(x + 1) is not a factor of x4 + x2 + x + 1


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