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KATA KUNCI:FPB
FAKTORISASI DAN FPB
A)45dan90
45=3×3×5
90=2×3×3×5
FPB=3^2×5=45
B)49 dan 56
49=7×7
56=2×2×2×7
FPB=7
C)81 dan 96
81=3×3×3
96=2×2×2×2×2×3
FPB=3
D)72 dan 81
72=2×2×2×3×3
81=3×3×3
FPB=3^2=9
E)160 dan 180
180=2^2×3^2×5
160=2^5
FPB=2^2×5
=4×5
=20