Discriminant = sq root of b^2 - 4*a*c =
sq root of 36 - 4*1*13 =
sq root 36 -52 =
sq root 36 -52 =
sq root -16
There are no real solutions for this equation. Both roots are complex numbers.
I think it’s either A or C
The length of the minor arc AB is 6.3cm
If a binomial

is a factor of a polynomial, then

is a root of this polynomial.