UPSC CDS 1 2021 Math Paper

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Question : 40 of 100

Marks: +1, -0

What is the value of x, if

b+√b2−2bx

b−√b2−2bx

=a?

ab
a+b
2ab
a+1
2ab
(a+1)2
ab
(a+b)2

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