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A quadratic equation has double root, th...

A quadratic equation has double root, then

A

the two roots lie on the different sides of the axis

B

the quadratic equation cannot be expressed in the form of a perfect square.

C

the product of the roots is always negative.

D

the sum of the roots may be positive or negative.

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Which one(s) of the following graphs is/are correctly sketched for the given quadratic equation which has double root (i.e., both the roots are equal), considering that all of these graphs appear considerably thick when seen, with a magnifying lens? The horizontal lines, in these graphs, represent the X-axis.

    A
    (A) (i) and (ii)
    B
    (B) (ii) and (iv)
    C
    (C) (i) and (iii)
    D
    (D) (ii) and (iii)

  • p : Every quadratic equation has one real root and q Every quadratic equation has two real roots, then truth value of p and q are:

    A
    p is true and q is false
    B
    p is false and q is true
    C
    p and q both true
    D
    p and g both false

  • If a quadratic equation has one real root then the other root will necessarily be

    A
    real
    B
    equal
    C
    complex conjugate
    D
    rational and unequal

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