Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Which one of the following polynomials has no real x-intercept? a)
k
(
x
)
=
x
2
+
4
x
+
4
k(x)=x^{2}+4x+4
k
(
x
)
=
x
2
+
4
x
+
4
b)
h
(
x
)
=
x
3
−
x
h(x)=x^{3}-x
h
(
x
)
=
x
3
−
x
c)
f
(
x
)
=
x
2
+
4
x
+
5
f(x)=x^{2}+4x+5
f
(
x
)
=
x
2
+
4
x
+
5
d)
g
(
x
)
=
x
2
−
2
x
−
8
g(x)=x^{2}-2x-8
g
(
x
)
=
x
2
−
2
x
−
8
Browse the problem library