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What is the value of ( (x+\frac{1}{x})^2-(x-\frac{1}{x})^2 )?( (x+\frac{1}{x})^2-(x-\frac{1}{x})^2 ) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (4)(4)
This is (4AB) where (A=x) and (B=\frac{1}{x}), so the value is (4). Exam tip: reciprocal terms multiply to (1).यह (4AB) है जहाँ (A=x) और (B=\frac{1}{x}), इसलिए मान (4) है। परीक्षा में reciprocal terms का गुणन (1) होता है।
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