Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Identify the expression that represents the discriminant of the quadratic equation .
MATHEMATICS · Single correct · GCSE · Mathematics · Algebra · Algebra
Problem
Identify the expression that 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)
4
a
c
−
b
2
4ac - b^2
4
a
c
−
b
2
(c)
b
2
−
4
a
c
b^2 - 4ac
b
2
−
4
a
c
(d)
b
2
−
4
a
c
\sqrt{b^2 - 4ac}
b
2
−
4
a
c
Related theory
Nature of Roots
Quadratic Equations
Nature and relations of roots
Algebra
Nature of roots (discriminant)
Solving Quadratic Equations
Browse the problem library