Home
Class 12
MATHS
If b(1)b(2)=2(c(1)+c(2)) and b(1), b(2),...

If `b_(1)b_(2)=2(c_(1)+c_(2)) and b_(1), b_(2), c_(1), c_(2)` are all real numbers, then at least one of the equations `x^(2)+b_(1)x+c_(1)=0` and `x^(2)+b_(2)x+c_(2)=0` has

A

real roots

B

purely imaginary roots

C

roots of the form `a +ib (a, b in R, ab ne 0)`

D

rational roots

Text Solution

Verified by Experts

The correct Answer is:
a
Promotional Banner

Topper's Solved these Questions

  • QUADRATIC EQUATIONS

    MTG-WBJEE|Exercise WB JEE Previous Years Questions (One or More than One Option Correct Type) |7 Videos
  • QUADRATIC EQUATIONS

    MTG-WBJEE|Exercise WB JEE WORKOUT ( One or More than One Option Correct Type) |10 Videos
  • PRINCIPLE OF MATHEMATICAL INDUCTION

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS|4 Videos
  • SETS , RELATIONS AND FUNCTIONS

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS (SINGLE OPTION CORRECT TYPE)|44 Videos

Similar Questions

Explore conceptually related problems

If b_(1)b_(2) = 2(c_(1) + c_(2)) , then at least one of the equations x^(2) + b_(1)x + c_(1) = 0 and x^(2) + b_(2)x + c_(2) = 0 has

If b_1b_2=2(c_1+c_2) , then at least one the of the equations x^(2) +b_1x+c_1=0 and x^(2)+b_2x+c_2=0 has :

If b_(1),b_(2)=2(c_(1)+c_(2),) then at least one of the equation x^(2)+b_(1)x+c_(1)=0andx^(2)+b_(2)x+c_(2)=0 has a.imaginary roots b.real roots c.purely imaginary roots d.none of these

The angle between the lines a _(1) x + b_(1)y+c_(1) =0 and a _(2)x+ b_(2)y+c_(2)=o, is

If (a_(1))/(a_(2)),(b_(1))/(b_(2)),(c_(1))/(c_(2)) are in AP and the equations a_(1)x^(2)+2b_(1)x+c_(1)=0 and a_(2)x^(2)+2b_(2)x+c_(2)=0 have a common root, prove that a_(2),b_(2),c_(2) are in G.P

The roots of a_(1)x^(2)+b_(1)x+c_(1)=0 are reciprocal of the roots of the equation a_(2)x^(2)+b_(2)x+c_(2)=0 if

Find the common factors of the expressions a_(1)x^(2)+b_(1)x+c_(1)anda_(2)x^(2)+b_(2)x+c_(1) where c_(1)ne0 .

If sec theta+tan theta=1, then root of the equation (a-2b+c)x^(2)+(b-2c+a)x+(c-2a+b)=0 is :

If a_(1)x^(2)+b_(1)x+c_(1)=0 and a_(2)x^(2)+b_(2)x+c_(2)=0 has a common root,then the common root is

If two equation a_(1) x^(2) + b_(1) x + c_(1) = 0 and, a_(2) x^(2) + b_(2) x + c_(2) = 0 have a common root, then the value of (a_(1) b_(2) - a_(2) b_(1)) (b_(1) c_(2) - b_(2) c_(1)) , is

MTG-WBJEE-QUADRATIC EQUATIONS -WB JEE Previous Years Questions ( Single Option Correct Type)
  1. If alpha, beta are the roots of the quadratic equation ax^(2)+bx +c=0 ...

    Text Solution

    |

  2. If alpha, beta are the roots of the quadratic equation x^(2)+px +q=0,...

    Text Solution

    |

  3. Let p, q be real numbers. If alpha is the root of x^(2) +3p^(2)x+5q^...

    Text Solution

    |

  4. If alpha, beta are the roots of ax^(2)+bx+c=0 (a ne 0) and alpha+h,...

    Text Solution

    |

  5. The number of solution(s) of the equation sqrt(x+1)-sqrt(x-1) = sqrt(...

    Text Solution

    |

  6. If alpha, beta are the roots of x^(2)-px +1=0 and gamma is a root of x...

    Text Solution

    |

  7. The quadratic expression (2x+1)^(2)-px +q ne 0 for any real x if

    Text Solution

    |

  8. Given that x is a real number satisfying (5x^(2)-26x+5)/(3x^(2)-10x+3...

    Text Solution

    |

  9. Let x(1), x(2), …, x(15) be 15 distinct numbers chosen from 1, 2, 3, …...

    Text Solution

    |

  10. Let P(x) be a polynomial, which when divided by x - 3 and x - 5 leave...

    Text Solution

    |

  11. If p, q are the roots of the equation x^(2)+px +q=0, then

    Text Solution

    |

  12. The number of values of k for which the equation x^(2) -3x +k=0 has t...

    Text Solution

    |

  13. If p, q are odd integers, then the roots of the equation 2px^(2) +(2p...

    Text Solution

    |

  14. If b(1)b(2)=2(c(1)+c(2)) and b(1), b(2), c(1), c(2) are all real numbe...

    Text Solution

    |

  15. Let a, b, c be real numbers such that a+b+c lt 0 and the quadratic eq...

    Text Solution

    |

  16. Let alpha, beta be two distinct roots of a cos theta+b sin theta =c, ...

    Text Solution

    |

  17. If alpha and beta are roots of ax^(2)+bx+c=0 then the equation whos...

    Text Solution

    |

  18. For real x, the greatest value of (x^(2)+2x+4)/(2x^(2)+4x+9) is

    Text Solution

    |

  19. Let f(x)=x^(4)-4x^(3)+4x^(2)+c, c in R. Then

    Text Solution

    |

  20. The graphs of the polynomial x^(2)-1 and cos x intersect

    Text Solution

    |