Which of the following are quadratic equations?
(i)`(x+1/x)^2=3(x+1/x)+4`
(ii) `(2x+1)(3x+2)=6(x-1)(x-2)`
(iii) `x+1/x=x^2,\ \ x!=0`

Which of the following are quadratic equations? (i) x+3/x=x^2 (ii) x^2+1/(x^2)=2

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? (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^2+6x-4=0 (ii) sqrt(3)x^2-2x+1/2=0 (iii) x^2+1/(x^2)=5

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) x-3/x=x^2 (ii) 2x^2-sqrt(3)x+9=0 (iii) x^2-2x-sqrt(x)-5=0

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 are quadratic equations? (i) x^(2)8x+12=0 (ii) x+(1)/(x)=5 (iii) x+(5)/(x)=x^(2) (iv) x^(2)-5sqrtx+7=0 (v) x^(2)-5x-sqrtx+4=0 (vi) x^(2)-(1)/(x^(2))=4 (vii) 5x^(2)-7x=3x^(2)-7x+3 (viii) (1)/(4)x^(2)+(7)/(6)x-2=0

Which of the following is a quadratic equation? (i) x^(2)+2x+1=(4-x)^(2)+3 (ii) -2x^(2)=(5-x)(2x-(2)/(5)) (iii) (k+1)x^(2)+(3)/(2)x=7" wherek"=-1 (iv) x^(3)-x^(2)=(x-1)^(3)

Check whether the following are quadratic equation (i) (x+1)^2=2(x-3) (ii) x^2-2x=(-2)(3-x) (iii) (x-2)(x+1)=(x-1)(x+3) (iv) (x-3)(2x+1)=x(x+5) (v) (2x-1)(x-3)=(x+5)(x-1) (vi) x^2+3x+1=(x-2)^2 (vii) (x+2)^3=2x(x^2-1) (viii) x^3-4x^2 – x + 1 = (x – 2)^3