Question

x^2-6x+12=0
This equation has:
-2 rational roots
-1 rational double root
-2 irrational roots
-2 complex roots

Answer 1

You can check the discriminant.
b^2-4ac
If it is negative: 2 complex roots
If it is 0: 1 real double root
If it is positive and can be square rooted: 2 rational roots
If it is positive and cannot be square rooted: 2 Irrational roots

Answer 2

thanks!

Answer 3

My pleasure! =D