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Byju's Answer
Standard VIII
Mathematics
Expansion of (x^2 - y^2)
Solve 2x + 3 ...
Question
Solve (2x + 3) (2x – 3) using algebraic identities.
A
4x-9
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B
4x
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C
-1
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D
4
x
2
−
9
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Solution
The correct option is
D
4
x
2
−
9
By the algebraic identity (a + b)(a – b) =
a
2
−
b
2
We can rewrite the given expression as
(
2
x
+
3
)
(
2
x
−
3
)
=
4
x
2
−
9
Suggest Corrections
12
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