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Which of the following is not a quadrati...

Which of the following is not a quadratic equation ?

A

`( y^(2))/(2) = 2y + 7`

B

`(6)/( y) -5-y=0`

C

`y-18=7y`

D

`( y - 3) ( y+3) = 0`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • Which of the following is not the quadratic equation whose roots are cosec^2thetaand sec^2theta ?

    A
    `x^2-6x+6=0`
    B
    `x^2-7x+7=0`
    C
    `x^2-4x+4=0`
    D
    None of these

  • Which of the following is a quadratic equation ?

    A
    `x^(2) + 2x + 1 = (4 - x)^(2) +3 `
    B
    `- 2x^(2) = (5 - x) (2x- (2)/(5))`
    C
    `( k + 1) x^(2) + (3)/(2) x = 7` where k = -1
    D
    `x^(3) - x^(2) = (x -1)^(3)`

  • Which of the following is a quadratic equation ?

    A
    `(x^(2)+1)=(2-x)^(2)+3`
    B
    `x^(3)-x^(2)=(x-1)^(3)`
    C
    `2x^(2)+3=(5+x)(2x-3)`
    D
    None of these