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Byju's Answer
Standard VIII
Mathematics
Expansion of (x^2 - y^2)
Factorise the...
Question
Factorise the following
49
x
2
−
25
y
2
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Solution
As we know that
a
2
−
b
2
=
(
a
−
b
)
(
a
+
b
)
49
x
2
−
25
y
2
=
(
7
x
)
2
−
(
5
y
)
2
=
(
7
x
−
5
y
)
(
7
x
+
5
y
)
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