Answer:
f(x)=x=± represents all its roots.
 represents all its roots.
g(x)=x=± does not represent roots
 does not represent roots
because negative number cannot exist in under root
h(x)=± represents all its roots
 represents all its roots
Step-by-step explanation:
#1
f(x)= -25
-25
to find rational root we will put   -25=0
-25=0
 =25
=25
 =
=
f(x=)x=±
f(x)=x=±
#2
g(x)= +25
+25
to find rational root we will put   +25=0
+25=0
 =-25
=-25
 =
=
g(x=)x=± /
/
#3
h(x)= -25
-25
to find rational root we will put   -25=0
-25=0
 =25
=25
 =
=
h(x=)x=±
h(x)=±