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Byju's Answer
Standard IX
Mathematics
Irrational Numbers on the Number Line
What is the v...
Question
What is the value of
(
√
7
+
√
5
)
(
√
7
−
√
5
)
?
A
1
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B
2
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C
5
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D
3
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Solution
The correct option is
C
2
(
√
7
+
√
5
)
(
√
7
−
√
5
)
⇒
(
√
7
)
2
−
(
√
5
)
2
⇒
7
−
5
=
2
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0
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