What is the discriminant?
B^2 -4ac
How do you factorise?
Either remove a common factor OR make the equation into brackets
If the discrimant is larger than 0 how many real roots are there?
2
if the discriminant is equal to 0 how many real roots are there?
There is one repeated root
If the discriminant is lower than 0 how many real roots are there?
There are no real roots