यदि x +  = 3 है, तो 8x3 का मान क्या है?

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SSC CGL 2022 Tier-I Official Paper (Held On : 05 Dec 2022 Shift 4)
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  1. 212
  2. 216
  3. 180
  4. 196

Answer (Detailed Solution Below)

Option 3 : 180
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दिया गया:

x +  = 3

प्रयुक्त अवधारणा:

सरल गणनाओं का प्रयोग किया जाता है

गणना:

⇒ x +  = 3

दोनों पक्षों में 2 का गुणा करने पर, हमें प्राप्त होता है

⇒ 2x +  = 6  .................(1)

अब, दोनों पक्षों को घन करने पर,

⇒ 

⇒ 

⇒ 

⇒ 

⇒   ..............(1) से 

⇒ 

⇒ 

इसलिए, उपरोक्त समीकरण का मान 180 है।

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