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Verified answer
1.20 = 2² x 5
25 = 5²
KPK = 2² x 5² = 4 x 25 = 100
2.
50 = 2 x 5²
40 = 2³ x 5
FPB = 2 x 5 =10
3.
90 = 2 x 3² x 5
faktor prima dari 90 adalah 2, 3 dan 5
4.
faktorisasi prima
60 = 2² x 3 x 5
84 = 2² x 3 x 7
bilangan yg berpangkat sama adalah 2 dan 3