fpb dan kpk dari 45,75 dan 90 adalah? Jawab yaaa :D

45
/\
3 15
.../\
..3 5

75
/\
3 25
..../\
..5 5

90
/\
2 45
..../\
...3 15
....../\
.....3 5

45 = 3^2 x 5
75 = 3 x 5^2
90 = 2 x 3^2 x 5
KPK = 2 x 3^2 x 5^2 = 450
FPB = 3 x 5 = 15