Question

check whether the following is quadratic equation or not:
x2 + 1/x2=11​

Answer 1

Answer:

the equation will become

x^4 - 11x^2 + 1 = 0

this is a fourth deree polynomial equation

however by substituting x^2 = y, this fourth degree equation can be converted into a quadratic equation

Answer 2

no

see image for more detailed answer