Question

[Nguyen hanh dung]

tim chữ  so tan cung cua :2014²⁰¹⁵+2013²⁰¹⁵+2012²⁰¹⁵-2017²⁰¹⁶

Answer 1

[Ngô Hoàng Thanh Vân]

2014^2015=2014^(2012+3)=(2014^2012)*(2014^3)=(...6)*(...4)=(...4)   (1)

2013^2015=2013^(2012+3)=(2013^2012)*(2013^3)=(...1)*(...7)=(...7)   (2)

2012^2015=2012^(2012+3)=(2012^2012)*(2012^3)=(...6)*(...8)=(...8)   (3)

2017^2016=(...1)  (4)

Từ(1) (2) (3) (4) ta có:(...4)+(...7)+(...8)-(...1)=(...8)