Prove that a^3+b^3+c^3-3abc=(a+b+c)(a^2+b^2+c^2-ab-bc-ca)a3+b3+c3−3abc=(a+b+c)(a2+b2+c2−ab−bc−ca). How can I solve this without expanding everything? Thx
1 Answer
Jan 4, 2018
Please refer to the Explanation.
Explanation:
It is known that,
Setting,
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