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Which option gives the correct expansion of ((3\sqrt{5}-2\sqrt{7})^{2})?किस विकल्प में ((3\sqrt{5}-2\sqrt{7})^{2}) का सही विस्तार है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (73-12\sqrt{35})(73-12\sqrt{35})
Here ((3\sqrt{5})^{2}=45), ((2\sqrt{7})^{2}=28), and the middle term is (12\sqrt{35}). Therefore, the expansion is (73-12\sqrt{35}).((3\sqrt{5})^{2}=45), ((2\sqrt{7})^{2}=28), और मध्य पद (12\sqrt{35}) है। इसलिए विस्तार (73-12\sqrt{35}) है।
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