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Byju's Answer
Standard VIII
Mathematics
Factorisation Using Algebraic Identities
Factorize the...
Question
Factorize the following using the Identities:
x
2
−
64
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Solution
Comparing
x
2
−
64
with
a
2
−
b
2
, we see that
a
=
x
and
b
=
8
Using,
a
2
−
b
2
=
(
a
+
b
)
(
a
−
b
)
,
x
2
−
64
=
x
2
−
8
2
=
(
x
+
8
)
(
x
−
8
)
∴
The factors of
x
2
−
64
are
(
x
+
8
)
and
(
x
−
8
)
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