Question

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Answer 1

Answer:

OPTION (A) - 2√5 + 3

Step-by-step explanation:

$\sf Conjugate \: pair : conjugate \:pair\:of\:a\:surd\:x\:is \:a \\ \sf \:another\:surd\:y\:such\:that\:the\:product\:xy \:is\:a \:rational\:number \\ \\ \sf Generally\:the\:conjugate\:pair\:of\: \sqrt{a} +\sqrt{b} \\ is \sqrt{a} - \sqrt{b} \:or\: \sqrt{b}- \sqrt{a} \\ \\ \sf so\: Generally\:the\:conjugate\:pair\:of\: 2\sqrt{5} +\sqrt{3} \\ is 2\sqrt{5} - \sqrt{3} \: or\: - 2\sqrt{5} + \sqrt{3} \\ \\ \sf So\:option\:(A)\:is\: correct\:choice$

❣️NIRANJAN45❣️

Answer 2

Step-by-step explanation:

from which standard this question?

sorry if sentence mistake