Question

Is the following equation quadratic?

x² - 2x + 5 = x²

Answer 1

x² - 2x + 5 = x²

x² - x² - 2x + 5 = 0

-2x + 5 = 0

Here, x is the only variable & the maximum index of the variable is not 2.

It is not in the form of quadratic equation.