Question

So sánh 2 số \(3^{21}\)và\(2^{31}\)

Answer 1

3²¹=3.3²⁰=3.9¹⁰

2³¹=2.2³⁰=2.8¹⁰

Vì 3>2;9>8 => 3.9¹⁰>2.8¹⁰ 

Hay 3²¹>2³¹

Answer 2

3²¹=3.3²⁰=3.9¹⁰

2³¹=2.2³⁰=2.8¹⁰

Vì 3.9¹⁰>2.8¹⁰ nên 3²¹>2³¹