Question

y2 + 1/y = 2 decide is it quadratic equation​

Answer 1

No. (because you have to solve it first then you can determine tha answer!)

y2+1/y=2

multiply the eq. by y to both sides

y2 × y + 1/y ×y = 2 × y

: y3 + 1 =2y

the index of the variable y is 3

:so this is not a quadratic equation.