Home
Class 12
MATHS
Sum of common roots of the equations z^(...

Sum of common roots of the equations `z^(3) + 2z^(2) + 2z + 1 =0` and `z^(1985) + z^(100) + 1=0` is

Promotional Banner

Topper's Solved these Questions

  • COMPLEX NUMBERS

    A DAS GUPTA|Exercise EXERCISE|224 Videos
  • Circular Functions, Identities

    A DAS GUPTA|Exercise Exercise|300 Videos
  • Continuity, Differentiability and Graph of Function

    A DAS GUPTA|Exercise Exercise|38 Videos

Similar Questions

Explore conceptually related problems

The common roots of the equations z^(3)+2x^(2)+2z+1=0 and z^(2017)+z^(2018)+1=0 are

The common roots of the equation Z^(3)+2Z^(2)+2Z+1=0 and Z^(1985)+Z^(100)+1=0 are

Common roots of the equation z^(3)+2z^(2)+2z+1=0 and z^(2020)+z^(2018)+1=0 , are

The common roots of the equation z^(3)+2z^(2)+2z+1=0 and z^(1985)+z^(100)+1=0 are: (A) 1,omega(B)1,omega^(2)(C)omega,omega^(2)(D) none of these

A DAS GUPTA-COMPLEX NUMBERS-EXERCISE
  1. Solve for x : x^5+x^3-x^2-1 =0.

    Text Solution

    |

  2. Solve for x : x^4+x^3+x^2+x+1 =0.

    Text Solution

    |

  3. Sum of common roots of the equations z^(3) + 2z^(2) + 2z + 1 =0 and z...

    Text Solution

    |

  4. Solve: "^8C0x^8+^8C2x^6+^8C4x^4+^8C6x^2+1=0.

    Text Solution

    |

  5. Find the integral solutions of the following equation: (1-i)^x=(1+i)^x

    Text Solution

    |

  6. Solve (1+i)^x = 2^x where x is an integer ne 0.

    Text Solution

    |

  7. If x^2-2xcos theta+1=0, then the value of x^(2n)-2x^n cosntheta+1, n ...

    Text Solution

    |

  8. If 2cos A = x+1/x , 2cosbeta=y+1/y then show that 2cos(A-B) =x/y+y/x.

    Text Solution

    |

  9. If xn =cos ((pi)/(2^(n)))+isin((pi)/(2^(n)))Prove that x1 x2…..xoo=-1

    Text Solution

    |

  10. If z1, z2 be the complex numbers satisfying x^2+4=2x, prove that z1^n+...

    Text Solution

    |

  11. If z=costheta+isintheta is a root of the equation a0z^n+a2z^(n-2)++a(n...

    Text Solution

    |

  12. If z=costheta+isintheta is a root of the equation a0z^n+a2z^(n-2)++a(n...

    Text Solution

    |

  13. If z^7+1 =0 then cos(pi/7) cos((3pi)/7) cos((5pi)/7) is (A) 1/8 ...

    Text Solution

    |

  14. Hence deduce that cos(pi)/(9)cos(2 pi)/(9)cos(3 pi)/(9)cos(4 pi)/(9)=(...

    Text Solution

    |

  15. (2+omega+omega^2)^3+(1+omega-omega^2)^3=(1-3omega+omega^2)^4=1

    Text Solution

    |

  16. (i) If alpha,beta be the imaginary cube root of unity, then show that ...

    Text Solution

    |

  17. If x=a+b,y=aomega+bomega^2 nd z=omega^2+bomega, prove that x^3+y^3+z^3...

    Text Solution

    |

  18. If x = a + b, y= aw + bw^2 and z = aw^2 + bw, where w is an imaginary ...

    Text Solution

    |

  19. Prove that ((i+sqrt3)/2)^100+((i-sqrt3)/2)^100+1=0.

    Text Solution

    |

  20. What is the value of ((i+sqrt3)/(-i+sqrt3))^(200)+((i-sqrt3)/(i+sqrt3)...

    Text Solution

    |