The number of reak rootts of the polynomial equation `x^(4)-x^(2)+2x-1

1.	The number of reak rootts of the polynomial equation `x^(4)-x^(2)+2x-1=0` is
Answer» Correct Answer - B `x^(4)-x^(2)+2x-1=0` `X^(2)-(xx-1)^(2)=0` `rArr(x^(2)+x-1)(x^(2)-x+1)=0` `x^(2)+x-1=0` has two real roots.

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The number of reak rootts of the polynomial equation `x^(4)-x^(2)+2x-1=0` is

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