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Are the roots real, repeated real, or complex?

Determine if the following have a solution or not? justify answer.
(apply the discriminant) are the roots real, repeated real, or complex?
1) 5x^2+8x+7=0
2) (7)^1/2y^2-6y-13(7)^1/2=0
3) 2x^2=x-1=0
4) 4/3x^2-2x+3/4=0
5) 2x^2+5x+5=0
6) p^2-4p+4=0
7) m^2=m+1=0
8) 3z^2+z-1=0

Solution Summary

Real, repeated real, and complex roots are investigated.

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