कौन-सा व्यंजक (x) के वर्ग और (y) के वर्ग के योग में (2xy) घटाने को दर्शाता है?
Which expression represents subtracting (2xy) from the sum of the squares of (x) and (y)?
Explanation opens after your attempt
C. \(x^2+y^2-2xy\)
Concept
First the sum of squares is \(x^2+y^2\), and (2xy) is subtracted from it. So \(x^2+y^2-2xy\) is correct.
Why this answer is correct
The correct answer is C. \(x^2+y^2-2xy\). First the sum of squares is \(x^2+y^2\), and (2xy) is subtracted from it. So \(x^2+y^2-2xy\) is correct.
Exam Tip
पहले वर्गों का योग \(x^2+y^2\) है और उसमें से (2xy) घटाना है। इसलिए \(x^2+y^2-2xy\) सही है।
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