100 x 101 - 100
= 100 x (101 - 1)
= 100 x 100
= 10000
=100x100-101
=10000-101
=9899 Mình nhanh nhất nha
100 x 101 - 100
= 100 x 101 - 100 x 1
= 100 x ( 101 - 1 )
= 100 x 100
= 10000
100x 101 - 100
= 100 ( 101- 1)
= 100 x 100
= 100000
100x101-100=100x(101-1)=100x100=10000
bằng 10000 nha