The discriminant is 1-4*2*(-1) = 1+8 = 9.
This is greater than 0 so there are 2 real solutions.
2.
As many solutions as there are points in the domain.
Is a trigonometric equation which has infinitely many real solutions.
There are none. For this equation, there is nonreal answer, as the graph of the quadratic does not pass below the x-axis
One solution: x = -4
2.
The quadratic equation will have two solutions.
Since the highest power of 'x' in the equation is '1', there's one solution.
Infinitely many
As many solutions as there are points in the domain.
It has infinitely many solutions.
0 = 0 is an identity and not an equation. Equations have solutions, identities do not.
There are infinitely many solutions to the equation since it simplifies to 13 = 13, which is always true.
Is a trigonometric equation which has infinitely many real solutions.
There are none. For this equation, there is nonreal answer, as the graph of the quadratic does not pass below the x-axis
1
One solution: x = -4