a=x²+xy+y²,b=y²+yz+z²,c=z²+xz+x² হলে (x-y)a+(y-z)b+(z-x)c=????
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Answered by
7
Answer:
0
Step-by-step explanation:
(x-y)a+(y-z)b+(z-x)c
=(x-y)(x²+xy+y²)+(y-z)(y²+yz+z²)+(z-x)(z²+xz+z²)
=x³-y³+y³-z³+z³-x³
=0
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Answered by
0
Answer:(x-y)(x²+xy+y²)+(y-z)(y²+yz+z²)+(z-x)(z²+zx+x²)
Step-by-step explanation:
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