help milk bài 3 nha
làm luôn bài 4 nha
Cáiii....gì...
Bài 3 :
a) 60 = 22 x 3 x 5
b) 84 = 22 x 3 x 7
c) 85 = 5 x 17
d) 35 = 5 x 7
e) 400 = 24 x 52
g) 1000 = 23 x 53
_HT_
\(3.\)
\(60=2^2.3.5\)
\(84=2^2.3.7\)
\(85=5.17\)
\(35=5.7\)
\(400=2^4.5^2\)
\(1000=2^3.5^3\)
\(4.\)
\(33=3.11\)
\(81=3^4\)
\(45=3^2.5\)
mệt thế .............................................
3.
60 = 22.3.5
84 = 22.3.7
85 = 5.17
35 = 5.7
400 = 24.52
1000 = 23.53
4.
33 = 3.11
81 = 34
45 = 32.5
