( 35 x 18 - 9 x 70 ) x 2010 x 2011 x ... x 2020
= (35 x 18 - 9 x 35 x 2) x 2010 x 2011 x ... x 2020
= ( 35 x 18 - 18 x 35 ) x 2010 x 2011 x ... x 2020
= 35 x (18 - 18 ) x 2010 x 2011 x ... x 2020
= 35 x 0 x 2010 x 2011 x ... x 2020
= 0 x 2010 x 2011 x ... x 2020
= 0
( 35 x 18 - 9 x 70 ) x 2010 x 2011 x . . . 2020
= 0 x 2010 x 2011 x . . . 2020
= 0
Chúc bạn học tốt ! ! !
(35 x 18 - 9 x 70) x 2010 x 2011 x ... x 2020
= 0 x 2010 x 2011 x ... x 2020
= 0