Question

Không tính, hãy so sánh A và B

A=2020×2020; 2015×2025

Answer 1

B dau vay bn

Answer 2

B = 2015 × 2025

Answer 3

A= 2020 x 2020

A = (2015 + 5) x 2020

A= 2015 x 2020 + 5 x 2020

B = 2015 x 2025

B = 2015 x (2020 +5 )

B = 2015 x 2020 + 2015 x 5

Vì 2025 x 2020 = 2015 x 2020

mà 2020 x 5 > 2015 x 5

=> A > B

Answer 4

A=2020.2020=2020.(2015+5)=2020.2015+2020.5

B=2025.2015=(2020+5).2015=2015.2020+2015.5

vì 2020.2015=2020.2015  mà 2020.5>2015.5

=> A<B

Answer 5

Ban Le Thach sai roi