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Byju's Answer
Standard VIII
Mathematics
Product of (x+y) (x-y)
Find the valu...
Question
Find the value of
38
2
−
22
2
16
using a suitable identity.
A
80
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B
70
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C
60
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D
90
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Solution
The correct option is
C
60
Since
(
a
2
−
b
2
)
=
(
a
+
b
)
(
a
+
b
), therefore
38
2
−
22
2
=
(
38
−
22
)
(
38
+
22
)
=
16
×
60
So,
38
2
−
22
2
16
=
16
×
60
16
=
60
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