Question

So sánh \(72^{15}\)và \(3^{21}.96^9\)

Answer 1

hahaha

Answer 2

72¹⁵=72,244

3²¹=1,046

96⁹=6,925

3²¹.96⁹=7,244

vậy 72¹⁵=96⁹

Answer 3

\(72^{15}=\left(2^3.3^2\right)^{15}=2^{45}.3^{30}\)

\(3^{21}.96^9=3^{21}\left(3.2^5\right)^9=3^{21}.3^9.2^{45}=3^{30}.2^{45}\)

vì \(3^{30}.2^{45}=3^{30}.2^{45}\)=>\(7^{15}=3^{21}.96^9\)