Posted by **Jennifer** on Wednesday, June 5, 2013 at 1:27pm.

When using the Quadratic formula, why is only necessary to examine the discrimant to determine if the equation only has real numbers?

- College Algebra -
**Steve**, Wednesday, June 5, 2013 at 1:30pm
because of the discriminant is negative, the square root is imaginary, so there are no real roots, only complex ones.

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