Thanks, Fluke !!!
Sorry, I did not understand
Can you please provide some more details?
Thank you in advance.
Thanks for your response. I am trying to find problem in my approach.
. This is a polynomial of degree 2, where D=b^2-4ac
For a polynomial of degree 4, i.e. maximum power of x, falls in a different category:ax^4+bx^2+c=0
. This is a polynomial of degree 4, for which D = b^2-4ac
may not hold true.
The question is asking about:x^4 - 2x^2 +1=0
. The maximum power of x is 4. You just don't know what is the discriminant. The discriminant formula you used is only for quadratic equations(x with highest power of 2).
For a quadratic equation, your approach would be correct.