Question

Find the discriminant of the following equation.

4x2 + 12x + 9 = 0

Answer 1

for
ax^2+bx+c=0
discriminatn is b^2-4ac

a=4
b=12
c=9
discriinat is
12^2-4(4)(9)=
144-144
0

the discrminat is 0