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)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. \(x^2+y^2-2xy\)

Step 1

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.

Step 2

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.

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: C. \(x^2+y^2-2xy\). Explanation: पहले वर्गों का योग \(x^2+y^2\) है और उसमें से (2xy) घटाना है। इसलिए \(x^2+y^2-2xy\) सही है। / First the sum of squares is \(x^2+y^2\), and (2xy) is subtracted from it. So \(x^2+y^2-2xy\) is correct.

Which concept should I revise for this Mathematics MCQ?

First the sum of squares is \(x^2+y^2\), and (2xy) is subtracted from it. So \(x^2+y^2-2xy\) is correct.

What exam hint can help solve this Mathematics question?

पहले वर्गों का योग \(x^2+y^2\) है और उसमें से (2xy) घटाना है। इसलिए \(x^2+y^2-2xy\) सही है।