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Write the 'discriminant ' of the equatio...

Write the 'discriminant ' of the equations `ax^(2) +bx+ c=0 `

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The correct Answer is:
` b^(2) - 4ac `
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Knowledge Check

  • The discriminant of the quadratic equations ax^(2) + bx+ c =0 is :

    A
    `- (b)/(a) `
    B
    ` b^(2) - 4ac `
    C
    ` (c ) /(a)`
    D
    ` (- b +- sqrt( b^(2) - 4ac))/( 2a)`

  • If the discriminant of quadratic equations b^(2) - 4ac= 0 then the roots are:

    A
    Real and distinct
    B
    Roosts are equal
    C
    No real roots
    D
    Roots are unequal and irrational

  • The nature of the roots of the equations ax^(2) + bx+ c =0 is decided by:

    A
    ` b^(2) - 4ac `
    B
    ` b^(2) + 4ac`
    C
    ` b- 4ac `
    D
    ` b+ 4ac `

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