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Mathematics
Problem
Which of the following expressions represents the discriminant of the quadratic equation
a
x
2
+
b
x
+
c
=
0
ax^{2}+bx+c=0
a
x
2
+
b
x
+
c
=
0
? a)
b
2
+
4
a
c
b^{2}+4ac
b
2
+
4
a
c
b)
b
2
−
4
a
c
\sqrt{b^{2}-4ac}
b
2
−
4
a
c
c)
b
2
−
4
a
c
b^{2}-4ac
b
2
−
4
a
c
d)
b
2
−
2
a
c
b^{2}-2ac
b
2
−
2
a
c
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