Using the discriminant, determine the number of real solutions. -2x2+x-28 = 0
O A. no real solutions
O B. one real solution
O C. two real solutions

A

Step-by-step explanation:

For a quadratic equation in standard form:

The discriminant, symoblized as Δ, is given by:

If:

We have the equation:

Thus:

Substituting them for our discriminant:

Evaluate:

Since our discriminant is negative, there is no real solutions.

Hence, our answer is A.

1. 34

2. 268

3. x=14.4

step-by-step explanation:

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step-by-step