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गुणनखंड कीजिए : a3 – 8b3 – 64c3 – 24abc - Mathematics (गणित)

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Question

गुणनखंड कीजिए :

a3 – 8b3 – 64c3 – 24abc

Sum

Solution

a3 – 8b3 – 64c3 – 24abc = (a)3 + (–2b)3 + (–4c)3 – 3 × (a) × (–2b) × (–4c)

= (a – 2b – 4c)[(a)2 + (–2b)2 + (–4c)2 – a(–2b) – (–2b)(–4c) – (–4c)(a)]  ...[सर्वसमिका का प्रयोग करके, a3 + b3 + c3 – 3abc = (a + b + c)(a2 + b2 + c2 – ab – bc – ca)] 

= (a – 2b – 4c)(a2 + 4b2 + 16c2 + 2ab – 8bc + 4ac)

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बहुपदों का गुणनखंडन
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Chapter 2: बहुपद - प्रश्नावली 2.3 [Page 22]

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NCERT Exemplar Mathematics [Hindi] Class 9
Chapter 2 बहुपद
प्रश्नावली 2.3 | Q 36. (i) | Page 22
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