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If x = k be a solution of the quadratic ...

If x = k be a solution of the quadratic equation `x^(2) + 4x + 3 = 0`, then k = - 1 and

A

2

B

-3

C

3

D

-2

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Knowledge Check

  • The solutions of the quadratic equation x^(4)-26x^(2)+25=0 are

    A
    5,3
    B
    `-1,4`
    C
    `+-1,+-5`
    D
    `-5,1`

  • If the roots of the quadratic equation x^(2) +2x+k =0 are real, then

    A
    `k lt 0`
    B
    `k le 0`
    C
    `k lt 1`
    D
    `k le 1`

  • If one of the roots of the quadratic equation 7 x^(2) - 50 x + k = 0 is 7, then is the value of k ?

    A
    7
    B
    1
    C
    `(50)/(7)`
    D
    `(7)/(50)`

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    If x=(-1)/2 , is a solution of the quadratic equation 3x^2+2k x-3=0 , find the value of k .

    If x=-(1)/(2) is a solution of the quadratic equation 3x^(2)+2kx-3=0 , find the velue of k.

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    If x=3 is one root of the quadratic equation x^(2)-2kx-6=0, then find the value of k

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