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Mathematics
Mathematics
Problem
In the factorisation
(
x
+
m
)
(
x
+
n
)
(x+m)(x+n)
(
x
+
m
)
(
x
+
n
)
of the quadratic trinomial
x
2
+
b
x
+
c
x^{2}+bx+c
x
2
+
b
x
+
c
, which relation between
m
m
m
,
n
n
n
and
b
b
b
is always true? a)
m
−
n
=
b
and
m
n
=
c
m-n=b \text{ and } mn=c
m
−
n
=
b
and
mn
=
c
b)
m
+
n
=
c
and
m
n
=
b
m+n=c \text{ and } mn=b
m
+
n
=
c
and
mn
=
b
c)
m
+
n
=
b
and
m
n
=
c
m+n=b \text{ and } mn=c
m
+
n
=
b
and
mn
=
c
d)
m
+
n
=
−
b
and
m
n
=
c
m+n=-b \text{ and } mn=c
m
+
n
=
−
b
and
mn
=
c
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