which of the following are quadratic equations?
`"(i) " x-5/x=3x-9 " (ii) " (x+3)(x-4)=0`
`"(iii) " 5/x-3=x^(2) " (iv) " n^(3)-n+4=n^(3)`
(v) `x-3=4x^(2)`

Which of the following are quadratic equations? (i) x-3/x=x^2 (ii) 2x^2-sqrt(3)x+9=0 (iii) x^2-2x-sqrt(x)-5=0

Which of the following are quadratic equations? 3x^2-5x+9=x^2-7x+3 (ii) x+1/x=1 (iii) x^2-3x=0

Which of the following are quadratic equations? 3x^(2)-5x+9=x^(2)-7x+3 (ii) x+(1)/(x)=1( iii) x^(2)-3x=0

Which of the following are quadratic equations? x^2+2sqrt(x)-3=0 (ii) 3x^2-4x+2=0 (iii) 2x^2-2x+4

Which of the following are quadratic equations? (i) 16 x^2-3=(2x+5)(5x-3) (ii) (x+2)^3=x^3-4 (iii) x(x+1)+8=(x+2)(x-2)

Which of the following are quadratic equations? x-(3)/(x)=x^(2) (ii) 2x^(2)-sqrt(3x)+9=0 (iii) x^(2)-2x-sqrt(x)-5=0

Which of the following are quadratic equations? x^(2)+2sqrt(x)-3=0 (ii) 3x^(2)-4x+2=2x^(2)-2x+4

Which of the following are quadratic equations? (i) x^(2)-5x+3=0 (ii) 2x^(2)-3sqrt(2)x+6=0 (iii) 3x^(2)-2sqrtx+8=0 (iv) 2x^(2)-3=0 (v) x+(1)/(x)=x^(2) (vi) x^(2)+(1)/(x^(2))=4(1)/(4)

Check whether the following are quadratic equations : (i) (x-2)^2+1=2x-3 (ii) x(x+1)+8=(x+2)(x-2) (iii) x(2x+3)=x^2+1 (iv) (x+2)^3=x^3-4

Which of the following is a quadratic equation? a) x-3=4x^2 b) x+9=0 c) x^3+2x^2+5=0 d)None of these