यदि (x+y=9) और (xy=14) है तो \(x^2+y^2\) कितना होगा?
If (x+y=9) and (xy=14), what is \(x^2+y^2\)?
Explanation opens after your attempt
A. (53)
Concept
(x-2+y-2=(x+y)2-2xy=81-28=53). Exam tip: use the given sum and product.
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.
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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