Home
Class 10
MATHS
Is 0.2 a root of the equation x^(2)-0.4=...

Is 0.2 a root of the equation `x^(2)-0.4=0`? Justify your answer.

Text Solution

Verified by Experts

No, since 0.2 does not satisfy the quadratic equation i.e. `(0.2)^(2)-0.4=0.04-0.4!=0`
Promotional Banner

Topper's Solved these Questions

  • POLYNOMIALS

    NCERT EXEMPLAR|Exercise Polynomials|29 Videos

  • REAL NUMBERS

    NCERT EXEMPLAR|Exercise Real Numbers|39 Videos

Similar Questions

Explore conceptually related problems

Is 0.3 a root of the equation x^(2)-0.9=0 ? Justify.

Check if 0.2 is a root of the equation x^(2)-0.4=0

The roots of the equation x^2+4=0 are

The roots of the equation x^2+4=0 are

Check if 0.2 is a root of the equation x^(2) - 0.4 = 0 .

3+4i is a root of the equation x^(2)+px+q=0 then

Real roots of equation x^(2)+5|x|+4=0 are

The roots of the quadratic equation x^(2)-0.04=0 are

NCERT EXEMPLAR-QUADRIATIC EQUATIONS-Quadratic Equations
  1. Does there exist a quadratic equation whose coefficients are rational ...

    Text Solution

    |

  2. Does there exist a quadratic equation whose coefficients are all disti...

    Text Solution

    |

  3. Is 0.2 a root of the equation x^(2)-0.4=0? Justify your answer.

    Text Solution

    |

  4. If b=0,c<0, then the roots ofx^2+bx+c=0 are numerically

    Text Solution

    |

  5. Find the roots of the quadratic equations by using the quadratic formu...

    Text Solution

    |

  6. Find the roots of the quadratic equations by using the quadratic formu...

    Text Solution

    |

  7. Find the roots of the quadratic equations by using the quadratic formu...

    Text Solution

    |

  8. Find the roots of the quadratic equations by using the quadratic formu...

    Text Solution

    |

  9. Salve the following quadratic equations by factorization method. x^2+2...

    Text Solution

    |

  10. . Find the roots of the following quadratic equation : x^2 - 3 sqrt5 ...

    Text Solution

    |

  11. Find the roots of the quadratic equations by using the quadratic formu...

    Text Solution

    |

  12. Find the roots of the following quadratic equations by the factorisati...

    Text Solution

    |

  13. Find the roots of the following quadratic equations by the factorisati...

    Text Solution

    |

  14. Find the roots of the following quadratic equations by the factorisati...

    Text Solution

    |

  15. Find the roots of the following quadratic equations by the factorisati...

    Text Solution

    |

  16. Find the roots of the following quadratic equations by the factorisati...

    Text Solution

    |

  17. Find whether the following equations have real roots. If real roots ex...

    Text Solution

    |

  18. Find whether the following equations have real roots. If real roots ex...

    Text Solution

    |

  19. Find whether the following equations have real roots. If real roots ex...

    Text Solution

    |

  20. Find whether the following equations have real roots. If real roots ex...

    Text Solution

    |