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dangthihanh10111980
2 năm trước
Ai giúp mk vs ak! Cho $a,b,c$$\neq$$0$ thỏa mãn $\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}=\dfrac{1}{a+b+c}$ và $a^{3}+b^{3}+c^{3}=2^{3}$. Tính $P=a^{2020}+b^{2021}+c^{2020}$. Mk cảm ơn rất nhiều ak!
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