no
It can be solved by using the quadratic equation formula.
The equation describes a circle with its centre at the origin and radius = √13. Each and every point on that circle is a solution.
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
It cannot be solved because the discriminant of the quadratic equation is less than zero
It is a quadratic equation.
It is the equation of a parabola.
No, It's a a quadratic equation because you have X squared.
It is the Cartesian equation of an ellipse.
f(x) = x2 + 5x + 1 The roots of this equation are x = -0.2087 and x = -4.7913 (approx).
(-4,-6)
You can't because it is not a quadratic equation.