यदि x=8215 है, तो (x+1x)2 का मान ज्ञात कीजिये।

  1. 153152
  2. 173152
  3. 145152
  4. 123152

Answer (Detailed Solution Below)

Option 4 : 123152
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Detailed Solution

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दिया है, x = 8 – 2√(15)

⇒ x = (√5)2 + (√3)2 – 2√(15)

⇒ x = (√5 - √3)2

⇒ √x = √5 - √3

और 1/√x = (√5 + √3)/2

प्रश्नानुसार,

(x+1x)2=[53+(5+32)]2

[3532]2

[45+36154]

486154

⇒ 123152
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