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Answer :

Hekmatawalkhilgo

Answer:

a quadratic equation has no real number solutions than the discriminant is less than zero  

D < 0  

(b^2 -4ac) < 0  

(9 -4(-1*c) < 0

(9+4c) < 0

4c < -9

c < -9/4

hope this will help you

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