23 x 38 + 46 x 31 = 23 x 38 + 23 x 2 x 31
= 23 x 38 + 23 x 62
= 23 x (38 + 62)
= 23 x 100
= 2300
Chúc bạn hok tốt nha!@
23 x 38 + 46 x 31
= 23 x 38 + 23 x 2 x 31
= 23 x 38 + 23 x 62
= 23 x ( 38 + 62 )
= 23 x 100
= 2300
23 x 38 + 46 x31
= 23 x ( 38 + 2 x 31 )
= 23 x 100
= 2300
hok tốt .
\(\text{Tính nhanh :}\)
\(\text{23 x 38 + 46 x 31}\)
\(\text{= 23 x ( 38 + 2 x 31 )}\)
\(\text{= 23 x 100}\)
\(\text{= 2300}\)
