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।
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