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Mathematics
Mathematics
Problem
If two roots of
x
3
−
a
x
2
+
b
x
−
c
=
0
x^3-ax^2+bx-c=0
x
3
−
a
x
2
+
b
x
−
c
=
0
are equal in magnitude but opposite in sign. Then: (a)
a
+
b
c
=
0
a+bc=0
a
+
b
c
=
0
(b)
a
2
=
b
c
a^2=bc
a
2
=
b
c
(c)
a
b
=
c
ab=c
ab
=
c
(d)
a
−
b
+
c
=
0
a-b+c=0
a
−
b
+
c
=
0
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