Question

Tính nhanh: 2014 x 2014 + 2016 x 2012

Answer 1

\(2014^2+\left(2014+2\right)\left(2014-2\right)=2014^2+2014^2-4=2\times2014^2-4\)

Answer 2

2014 x2014+2016 x 2012

=2014+2016 x 2012

=(2014+2016) x 2012

=2012 x 4036

????????

ah hihihi do ngoc