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Mathematics
Mathematics
Problem
Factorise completely:
4
x
3
−
9
x
4x^3-9x
4
x
3
−
9
x
. a)
(
2
x
−
3
)
(
2
x
+
3
)
(2x-3)(2x+3)
(
2
x
−
3
)
(
2
x
+
3
)
b)
x
(
2
x
−
3
)
(
2
x
+
3
)
x(2x-3)(2x+3)
x
(
2
x
−
3
)
(
2
x
+
3
)
c)
x
(
4
x
2
+
9
)
x(4x^2+9)
x
(
4
x
2
+
9
)
d)
4
x
(
x
−
3
)
(
x
+
3
)
4x(x-3)(x+3)
4
x
(
x
−
3
)
(
x
+
3
)
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