English

X2 + 4y2 + z2 + 2xy + xz – 2yz को (–z + x – 2y) से गुणा कीजिए। - Mathematics (गणित)

Advertisements
Advertisements

Question

 x2 + 4y2 + z2 + 2xy + xz – 2yz को (–z + x – 2y) से गुणा कीजिए।

Sum

Solution

प्रश्न के अनुसार:

(x2 + 4y2 + z2 + 2xy + xz – 2yz) × (–z + x – 2y)

अब, इस प्रकार गुणा करें:

= {x + (–2y) + (–z)}{(x)2 + (–2y)2 + (–z2) – (x)(–2y) – (–2y)(–z) – (–z)(x)}

= x3 + (–2y)3 + (–z)3 – 3 × x × (–2y) × (–z)

सर्वसमिका का प्रयोग करें:

(a + b + c)(a2 + b2 + c2 – ab – bc – ca) = a3 + b3 + c3 – 3abc

= x3 – 8y3 – z3 – 6xyz

shaalaa.com
बहुपदों का गुणनखंडन
  Is there an error in this question or solution?
Chapter 2: बहुपद - प्रश्नावली 2.4 [Page 23]

APPEARS IN

NCERT Exemplar Mathematics [Hindi] Class 9
Chapter 2 बहुपद
प्रश्नावली 2.4 | Q 6. | Page 23
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×