Question

So sánh A=20¹⁰+1/20¹⁰-1 với B=20¹⁰-1/20¹⁰-3

Answer 1

\(A=\dfrac{20^{10}-1+2}{20^{10}-1}=1+\dfrac{2}{20^{10}-1}\)

\(B=\dfrac{20^{10}-3+2}{20^{10}-3}=1+\dfrac{2}{20^{10}-3}\)

20^10-1>20^10-3

=>2/20^10-1<2/20^10-3

=>A<B

Answer 2

B=2010−3+22010−3=1+22010−3�=2010−3+22010−3=1+22010−3

20^10-1>20^10-3

=>2/20^10-1<2/20^10-3

=>A<B