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Mathematics
Problem
Factorise and simplify
3
a
2
+
3
a
−
18
3a^2 + 3a - 18
3
a
2
+
3
a
−
18
a. A:
(
a
+
3
)
(
a
−
2
)
(a + 3)(a - 2)
(
a
+
3
)
(
a
−
2
)
b. B:
3
(
a
−
3
)
(
a
+
2
)
3(a - 3)(a + 2)
3
(
a
−
3
)
(
a
+
2
)
c. C:
3
(
a
−
3
)
(
a
−
2
)
3(a - 3)(a - 2)
3
(
a
−
3
)
(
a
−
2
)
d. D:
3
(
a
+
3
)
(
a
−
2
)
3(a + 3)(a - 2)
3
(
a
+
3
)
(
a
−
2
)
e. E: None of these
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