There are no real solutions. The discriminant (b squared -4ac) is less than 0, so there are 2 imaginary solutions and 0 real ones.
Infinitely many.
1
As many solutions as there are points in the domain.
None.
Infinitely many: they are the same line!
Infinitely many.
1
As many solutions as there are points in the domain.
1
None.
Infinite.
Infinitely many: they are the same line!
It has infinitely many solutions.
0 = 0 is an identity and not an equation. Equations have solutions, identities do not.
It has two equal solutions of 2
One solution.
The quadratic equation will have two solutions.