Question

So sánh \(199^{20}\)và \(200^{15}\)

Answer 1

Ta có 199^4>200^3 => (199^4)^5>(200^3)^5 <=> 199^20>200^15

Answer 2

Ta có : 199²⁰ = ( 199⁴)⁵ = 1 568 239 201⁵

            200¹⁵ = ( 200³)⁵ = 8 000 000⁵

=> 199²⁰ < 200¹⁵