यदि (x+y=9) और (xy=14) है तो \(x^2+y^2\) कितना होगा?

If (x+y=9) and (xy=14), what is \(x^2+y^2\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (53)

Step 1

Concept

(x-2+y-2=(x+y)2-2xy=81-28=53). Exam tip: use the given sum and product.

Step 2

Why this answer is correct

The correct answer is A. (53). (x-2+y-2=(x+y)2-2xy=81-28=53). Exam tip: use the given sum and product.

Step 3

Exam Tip

(x-2+y-2=(x+y)2-2xy=81-28=53)। परीक्षा में दिए गए योग और गुणन का उपयोग करें।

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Mathematics Answer, Explanation and Revision Hints

यदि (x+y=9) और (xy=14) है तो \(x^2+y^2\) कितना होगा? / If (x+y=9) and (xy=14), what is \(x^2+y^2\)?

Correct Answer: A. (53). Explanation: (x-2+y-2=(x+y)2-2xy=81-28=53)। परीक्षा में दिए गए योग और गुणन का उपयोग करें। / (x-2+y-2=(x+y)2-2xy=81-28=53). Exam tip: use the given sum and product.

Which concept should I revise for this Mathematics MCQ?

(x-2+y-2=(x+y)2-2xy=81-28=53). Exam tip: use the given sum and product.

What exam hint can help solve this Mathematics question?

(x-2+y-2=(x+y)2-2xy=81-28=53)। परीक्षा में दिए गए योग और गुणन का उपयोग करें।