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Byju's Answer
Standard VIII
Mathematics
Factorisation by Common Factors
iv Factorise ...
Question
Question 2(iv)
Factorise the following expressions
−
16
z
+
20
z
3
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Solution
16
z
=
2
×
2
×
2
×
2
×
z
20
z
3
=
2
×
2
×
5
×
z
×
z
×
z
T
h
e
c
o
m
m
o
n
f
a
c
t
o
r
s
a
r
e
2
,
2
a
n
d
z
.
∴
−
16
z
+
20
z
3
=
−
(
2
×
2
×
2
×
2
×
z
)
+
(
2
×
2
×
5
×
z
×
z
×
z
)
=
(
2
×
2
×
z
)
[
−
(
2
×
2
)
+
(
5
×
z
×
z
)
]
=
4
z
(
−
4
+
5
z
2
)
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Factorisation by Common Factors
Standard VIII Mathematics
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