If is a polynomial of degree with rational coefficients and and 5 are three roots of , then the least value of is |
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a) |
5 |
b) |
4 |
c) |
3 |
d) |
6 |

If is a polynomial of degree with rational coefficients and and 5 are three roots of , then the least value of is |
|||||||

a) |
5 |
b) |
4 |
c) |
3 |
d) |
6 |

1 Answer

127 votes

**(a)**

Since, and 5 are the some roots of polynomial of degree . As we know that conjugate are also the roots of the polynomial. Therefore, and are also the roots of the polynomial.

The least value of is 5

127 votes

127