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