the discriminant is the bit in the quaratic equaiton under the squaer root sign
that is b^2-4ac
3 cases
if
b^2-4ac>0, there are 2 real roots
b^2-4ac=0, there is 1 real root
b^2-4ac<0, there are 2 imaginary roots
ax^b+bx+c=0
24x^2+13x
a=24
b=13
13^2-4(24)
169-96
73
discriminatn is 73 A
