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Mathematics
Mathematics
Problem
Factorise completely:
3
m
3
n
−
12
m
n
3
3m^3 n - 12m n^3
3
m
3
n
−
12
m
n
3
. a)
3
m
n
(
m
2
−
2
n
2
)
3mn(m^2 - 2n^2)
3
mn
(
m
2
−
2
n
2
)
b)
3
m
n
(
m
−
2
n
)
(
m
+
2
n
)
3mn(m - 2n)(m + 2n)
3
mn
(
m
−
2
n
)
(
m
+
2
n
)
c)
3
m
n
(
m
2
+
4
n
2
)
3mn(m^2 + 4n^2)
3
mn
(
m
2
+
4
n
2
)
d)
3
m
n
(
m
−
4
n
)
(
m
+
n
)
3mn(m - 4n)(m + n)
3
mn
(
m
−
4
n
)
(
m
+
n
)
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