UPSC CDS 1 2023 Math Paper

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Question : 45 of 100

Marks: +1, -0

If x=a+b+‌

(a−b2undefined.

4a‌+‌4b

and y=‌

a‌+‌b

4

+‌

ab

a‌+‌b

then what is the value of (x - a)² - (y - b)² ?

a²
b²
ab
a²b²

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