k = sqrt(160) = 12.6
Using the quadratic equation formula: x = 8.42 or x = -1.42
It is a quadratic equation in X.
No, It's a a quadratic equation because you have X squared.
no, because xx=x squared, and x squared is not linear
x = 2
It is the equation of a parabola.
It is a quadratic equation in the one variable.
It is the Cartesian equation of an ellipse.
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.