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The product of which two binomials is written as a difference of squares?किन दो द्विपदों के गुणनफल को वर्गों के अंतर के रूप में लिखा जाता है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \((x+y)(x-y)=x^2-y^2\)\((x+y)(x-y)=x^2-y^2\)
The correct identity is \((x+y)(x-y)=x^2-y^2\). On multiplying, the middle terms \(-xy\) and \(+xy\) cancel, leaving a difference of squares. Exam tip: look for binomials with opposite signs.सही पहचान \((x+y)(x-y)=x^2-y^2\) है। गुणा करने पर मध्य पद \(-xy\) और \(+xy\) कट जाते हैं, इसलिए वर्गों का अंतर बचता है। परीक्षा टिप: विपरीत चिन्ह वाले द्विपद पहचानें।
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