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Which of the following is a quadratic eq...

Which of the following is a quadratic equation?

A

`x^(2)-3sqrt(x)+2=0`

B

`x+(1)/(x)=x^(2)`

C

`x^(2)+(1)/(x^(2))=5`

D

`2x^(2)-5x=(x-1)^(2)`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Which of the following is quadratic equation ?

    A
    `x^(3)-2x^(2)-sqrt(5)-x=0`
    B
    `3x^(2)-5x+9=x^(2)-7x+3`
    C
    `((x+1)/x)^(2)=3((x+1)/(x+4))`
    D
    `x^(3)+x+36`

  • (sqrt3+i)^100=2^99(p+iq) then p and q are the roots of which of the following quadratic equation?

    A
    `x^2-(sqrt3+1)x-sqrt3=0`
    B
    `x^2-(sqrt3-1)x-sqrt3=0`
    C
    `x^2+(sqrt3+1)x+sqrt3=0`
    D
    None

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