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$a + b + c = 0$ जाल्यार $a^3 + b^3 + c^3$ चें मोल कितलें?

A$3abc$
B$-3abc$
C$0$
D$abc$
Answer & Solution
Correct answer: A. $3abc$
वळख $a^3+b^3+c^3-3abc=(a+b+c)(a^2+b^2+c^2-ab-bc-ca)$ कडेन उजव्या बाजूक शून्य आसता जेन्ना $a+b+c=0$. देखून $a^3+b^3+c^3=3abc$, देखून पर्याय A बरोबर आसा. बेरीज शून्य आशिल्ल्यान घनांची बेरीज शून्य आसा असो स्वताचो अर्थ जायना.
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