2772 nhé !  :)

50 + 60 + 80 + 70 + 90 + 10 + 100 + 20 + 30 + 50

= (50 + 50) + (80 + 20) + (70 + 30) + (90 + 10) + 100 + 60

= 100 + 100 + 100 + 100 + 100 + 60

= 500 + 60

= 560

k cho mk nha pạn

cảm ơn trước

a, 12⁸.9¹²

=(2².3)⁸.(3²)¹²

=2¹⁶.3⁸.3²⁴

=2¹⁶.3⁸.3¹⁶.3⁸

=(2.3)¹⁶.(3²)⁸

=6¹⁶.3¹⁶

=(6.3)¹⁶

=18¹⁶