Question

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

Answer 1

no real roots one real root
two distinct real roots three distinct real roots

Answer 2

The discriminant of the equation :
\[ax^2+bx+c=0\]
is :
\[\Delta= b^2-4\times a\times c\]
And there is 3 cases :
\[1.~~ \Delta >0\]
In this case there are two different solutions
\[ 2.~~\Delta=0\]
In this case there is one sol solution !
\[3.~~\Delta<0\]
in this case there are no real solution !

Answer 3

so which is the answer

Answer 4

Use the rule above to find the answer !

Answer 5

ok

Answer 6

thanks

Answer 7

Did you find the value of :
\[\Delta\]??

Answer 8

yes

Answer 9

What is it ?