Question

What is the discriminant of `y=x^2-6x+9` and what does that mean?

Answer 1

`y = x^2 - 6x + 9`

Ans: #y = (x - 3)^2@

Explanation:

`D = b^2 - 4ac = 36 - 36 = 0.` This means there is a double root
at x = 3.
In fact, this function y is in the form `y = (x - 3)^2.`