ta có:\(4^{30}=2^{30}.2^{30}=\left(2^3\right)^{10}.\left(2^2\right)^{15}=8^{10}.4^{15}>8^{10}.3^{15}>8^{10}.3^{11}=8^{10}.3^{10}.3=3.24^{10}\)
vậy 2^30+3^30+4^30>3.24^10
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