Home
Class 10
MATHS
If one root of quadratic equation kx^2-7...

If one root of quadratic equation `kx^2-7x+12=0` is 3, then value of k is………..a)`-1` b)`1` c)`3` d)None of these

A

-1

B

1

C

3

D

none of these

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Quadratic Equations

    CHETANA PUBLICATION|Exercise EXERCISE|98 Videos

  • PYTHAGORAS THEOREM

    CHETANA PUBLICATION|Exercise EXERCISE|39 Videos

  • QUADRILATERALS

    CHETANA PUBLICATION|Exercise EXAMPLE|20 Videos

Similar Questions

Explore conceptually related problems

If one root of the quadratic equation p^2-3p+k=0 is 5, then the value of k is

If one root of the quadratic equation x^2-7x+k=0 is 2, find the value of K.

If one root of the quadratic equation 2x^(2)+kx-2=0 is -2, find the value of k.

If one root of the quadratic equation 3y^(2)-ky+8=0 is 2/3 , find the value of k.

If one root of the quadratic equation 3y^2-ky+8=0 is 2/3 , then find the value of k.

If one root of the quadratic equation kx^(2) – 7x + 5 = 0 is 1, then find the value of k.

If x=3 is one root of the equation kx^2-10x+3=0 , find the value of k .

The roots of the quadratic equation m^2-3m+1=0 are

Is x=-1 a root of the quadratic equation x^2-3x-4=0 ?

If x=9 is one root of the quadratic equation x^2-11x+k=0 , then find the value of k.

CHETANA PUBLICATION-Quadratic Equations-EXERCISE
  1. The roots of the quadratic equation y^2-16y+63=0 are a)-9,-7 b)-9,7 c)...

    Text Solution

    |

  2. If the roots of a quadratic equation are real and equal, then Delta mu...

    Text Solution

    |

  3. If one root of quadratic equation kx^2-7x+12=0 is 3, then value of k i...

    Text Solution

    |

  4. If one root of quadratic equation is 1-sqrt3 then the other root is………...

    Text Solution

    |

  5. If the roots of ax^2+bx+c=0 are real and equal then.......a)b^2-4aclt0...

    Text Solution

    |

  6. The value of discriminant of the equation x^2+x+1=0 is…………..a)-4 b)-3 ...

    Text Solution

    |

  7. alpha, beta are roots of quadratic equation such that alpha+beta=-4 a...

    Text Solution

    |

  8. The standard form of quadratic equation x-5/x=3x-7 is……….a)2x^2-8x+7=0...

    Text Solution

    |

  9. What is the nature of roots of quadratic equation: 9x^2-12x+4=0? a)Rea...

    Text Solution

    |

  10. Three times the square of natural number is 363 is written in the math...

    Text Solution

    |

  11. Which of the following is not a quadratic equation? a)-5/3x^2=2x+9 b)(...

    Text Solution

    |

  12. For quadratic equation the product of the roots alpha and beta=…………..a...

    Text Solution

    |

  13. Write the formula: alpha^3+beta^3=…………….a)(alpha+beta)^3-3alphabeta(al...

    Text Solution

    |

  14. If one root of quadratic equation is 5+sqrt 5,then the product of root...

    Text Solution

    |

  15. If x=9 is one root of the quadratic equation x^2-11x+k=0, then find th...

    Text Solution

    |

  16. If one root of the quadratic equation 3y^2-ky+8=0 is 2/3, then find th...

    Text Solution

    |

  17. Determine whether the given values of x are the roots of given quadrat...

    Text Solution

    |

  18. Which of the following is a quadratic equation? a)x-5/x=3x-9 b)x+3=0 c...

    Text Solution

    |

  19. Which of the following is a quadratic equation? a)(x+3)(x-4)=0 b)x=9 c...

    Text Solution

    |

  20. Which of the following is a quadratic equation? a)5/x-3=x^2 b)x^2=9 c)...

    Text Solution

    |