x + y = 36 எனில், (x - 27)3 + (y - 9)3 ஐக் கண்டறியவும்.

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Answer (Detailed Solution Below)

Option 4 : 0
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Detailed Solution

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கொடுக்கப்பட்டது:

x + y = 36

பயன்படுத்தப்படும் சூத்திரம்:

a3 + b3 = (a + b)(a2 - ab + b2)

கணக்கீடு:

x + y = 36

⇒ x + y - 36 = 0 ................(1)

⇒ (x - 27) + (y - 9) = 0

(x - 27) = a மற்றும் y - 9 = b என்று கருதுவோம்.

a3 + b3 = (a + b)(a2 + b2 - ab) சூத்திரத்தைப் பயன்படுத்தி, a மற்றும் b இன் மதிப்பை சமன்பாட்டிற்குள் மாற்றவும்

.

⇒ (x - 27)3 + (y - 9)3 = ( x - 27 + y - 9)((x - 27)2 - (x - 27)(y - 9) + (y - 9) 2 )

⇒ (x - 27)3 + (y - 9)3 = ( x + y - 36)( (x - 27)2 - (x - 27) (y - 9) + (y - 9)2)

சமன்பாடு (1)இல் இருந்து  x + y - 36 = 0 இன்மதிப்பை கணக்கிட.

⇒ (x - 27)3 + (y - 9)3 = ( 0)( (x - 27)2 - (x - 27) (y - 9) +(y - 9)2)

⇒ (x - 27)3 + (y - 9)3 = 0

∴ தேவையான மதிப்பு 0.

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