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Byju's Answer
Standard IX
Mathematics
(a ± b)²
Factorise : ...
Question
Factorise :
4
x
2
−
9
y
2
−
2
x
−
3
y
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Solution
Given :
4
x
2
−
9
y
2
−
2
x
−
3
y
We can further write it as
4
x
2
−
9
y
2
−
2
x
−
3
y
=
(
2
x
)
2
−
(
3
y
)
2
−
(
2
x
+
3
y
)
Based on the equation
a
2
−
b
2
=
(
a
+
b
)
(
a
−
b
)
We get,
4
x
2
−
9
y
2
−
2
x
−
3
y
=
(
2
x
+
3
y
)
(
2
x
−
3
y
)
−
(
2
x
+
3
y
)
Taking
(
2
x
+
3
y
)
as common
4
x
2
−
9
y
2
−
2
x
−
3
y
=
(
2
x
+
3
y
)
(
2
x
−
3
y
−
1
)
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0
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Standard IX Mathematics
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