Question

discriminant to determine the nature of the roots of x2 + 2x + 5 = 0.









no real roots



one real root





two distinct real roots
those are the chocies for the work how to get the answers pls help ty


three distinct real roots

Answer 1

use formula b^2 -4ac where b=2 a=1 c=5
so maybe the first is correct as when discriminant is negative then the equation has no real roots

Answer 2

ok thank you these ones are hard for me to thanks again the it would be no real roots

Answer 3

The discriminant is as Sarkar said, b^2-4ac because that is what goes under the radical in the quadratic formula. If b^2-4ac is zero, then there is only one root. If b^2-4ac is positive, then there are two real roots. If b^2-4ac is negative, then there are no real roots (we would get a complex number in the quadratic formula).