Respuesta :

Answer:

Each quadratic has two roots. Those for (b) and (c) are real. The two roots of (a) are complex (there are no real roots).

Step-by-step explanation:

For me, it is quite efficient to use a graphing calculator. Each x-intercept represents a real root.

The first equation has no real roots—both roots are complex. Each of the other equations has 2 real roots.

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