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Byju's Answer
Standard IX
Mathematics
Expansion of (a ± b ± c)²
If √2=1.414...
Question
If
√
2
=
1.414
then the value of
5
+
√
2
5
−
√
2
is
A
1.787
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B
1.525
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C
1.828
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D
1.326
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Solution
The correct option is
A
1.787
5
+
√
2
5
−
√
2
×
5
+
√
2
5
+
√
2
=
27
+
10
√
2
25
−
2
=
27
+
14.14
23
=
1.787
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