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Mathematics
Mathematics
Problem
Factorise
8
p
2
−
72
8p^{2}-72
8
p
2
−
72
. a)
(
p
−
3
)
(
p
+
3
)
(p-3)(p+3)
(
p
−
3
)
(
p
+
3
)
b)
8
p
(
p
−
9
)
8p(p-9)
8
p
(
p
−
9
)
c)
8
(
p
−
3
)
(
p
+
3
)
8(p-3)(p+3)
8
(
p
−
3
)
(
p
+
3
)
d)
8
(
p
−
9
)
(
p
+
9
)
8(p-9)(p+9)
8
(
p
−
9
)
(
p
+
9
)
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