are the roots of the equation x3 - 10x2 + 7x + 8=0. Match the following and choose the correct answer.
A. A B C D | (i) 5 3 1 2 |
B. A B C D | (ii) 4 3 1 2 |
C. A B C D | (iii) 5 3 2 1 |
D. A B C D | (iv) 5 2 3 1 |
If f(x) is apolynomial ofdegreen with rational coefficients and 1 + 2i , and 5 are three roots of f(x) = 0 , then the least value of n is
5
4
3
6
Match the following elements of with their co-factors and choose the correct answer
A. A B C D | (i) 2 4 1 3 |
B. A B C D | (ii) 2 4 3 1 |
C. A B C D | (iii) 4 2 1 3 |
D. A B C D | (iv) 4 1 2 3 |
If z1, z2 are two complex numbers satisfying , then is equal to
1
2
3
4
A.
1
The difference between two roots of the equation x3 - 13x2 + 15x + 189 = 0 is 2. Then the roots of the equation are :
- 3, 5, 7
- 3, - 7, - 9
3, - 5, 7
- 3, - 7, 9