Home
Class 12
MATHS
The coefficient of x in x^(2)+px+q=0 was...

The coefficient of x in `x^(2)+px+q=0` was taken as 17 in place of 13 and its roots were found to be -2 and -15. The roots of the original equation are

A

3,7

B

`-3,7`

C

`-3,-7`

D

`-3,-10`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • COMPLEX NUMBERS AND QUADRATIC EQUATIONS

    NEW JOYTHI PUBLICATION|Exercise EXERCISE|50 Videos

  • BINOMIAL THEOREM

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|51 Videos

  • CONIC SECTIONS

    NEW JOYTHI PUBLICATION|Exercise EXERCISE - HYPERBOLA|9 Videos

Similar Questions

Explore conceptually related problems

The root of the polynomial equation 2x + 3 = 0 is

The root of the polynomial equations 2x+3=0 is ………….

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

If x=-2 is one root of x^3 -x^2 -17x =22 then find the other roots of the equation.

Find p if x^(2) – px + p = 0 has equal roots

If the roots of the equation x^(2)+px+c=0 are 2,-2 and the roots of the equation x^(2)+bx+q=0 are -1,-2, then the roots of the equation x^(2)+bx+c=0 are

The equation whose roots are the squares of the roots of the eqation 2x^(2)+3x+1=0 is

If x^(2)px+q=0 is the quadratic equation whose roots are a-2" and "b-2 where a and b are the roots of x^(2)-3x+1=0 , then

Determine the nature of the roots of the equation 2x^(2) + x - 1 = 0

NEW JOYTHI PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-QUESTIONS FROM COMPETITIVE EXAMS
  1. The quadratic equation whose roots are twice the roots of 2x^(2)-5x+2=...

    Text Solution

    |

  2. If alpha+beta=4" and "alpha^(3)+beta^(3)=44" the "alpha, beta are the ...

    Text Solution

    |

  3. The coefficient of x in x^(2)+px+q=0 was taken as 17 in place of 13 an...

    Text Solution

    |

  4. The value of (cos"" (pi)/(2)+isin ""(pi)/(2))(cos ((pi)/(2^2))+isin((p...

    Text Solution

    |

  5. (2-omega)(2-omega^(2))(2-omega^(10))(2-omega^(11))="……..", where omega...

    Text Solution

    |

  6. If Zr =cos ((pi)/(2^r))+isin((pi)/(2^r)) then Z(1).Z(2).Z(3)"…….." upt...

    Text Solution

    |

  7. In the Argand diagram OAP is an isosceles right angled triangle, right...

    Text Solution

    |

  8. The real part of [1+cos(pi/5)+isin (pi/5)]^(-1)

    Text Solution

    |

  9. For a ne b, if the equation x^(2)+ax+b=0" and "x^(2)+bx+a=0 have a com...

    Text Solution

    |

  10. If (2z1)/(3z2) is purely imaginary then |(z(1)-z(2))/(z(1)+z(2))|

    Text Solution

    |

  11. If one of the roots of the equation x^(2)+bx+3=0 is thrice the other t...

    Text Solution

    |

  12. If alpha, beta are the roots of the equation (x-a)(x-b)=5 then the roo...

    Text Solution

    |

  13. If alpha, beta are roots of the equation ax^(2)+bx+c=0 then the value...

    Text Solution

    |

  14. If z= re^(i theta)" then "|e^(iz)|=

    Text Solution

    |

  15. i^(2)+i^(4)+i^(6)+"…………up to "(2k+1) terms, k in N is

    Text Solution

    |

  16. If z=sqrt(2)- isqrt(2) si rotated through an angle 45^(@) in the anti-...

    Text Solution

    |

  17. If z=(7-i)/(3-4i)" then "z^(14)=

    Text Solution

    |

  18. If (sqrt(8)+i)^(50)=3^(49)(a+ib)" then "a^(2)+b^(2) is

    Text Solution

    |

  19. If 3p^(2)=5p+2" and "3q^(2)= 5q+2, where p ne q, then the equation wh...

    Text Solution

    |

  20. If x=8+3sqrt(7)" and "xy=1, then the value of (1)/(x^2)+(1)/(y^2) is

    Text Solution

    |