Tentukan KPK dan FPB dari : 6ab dan 12b 9ab dan 12bc 18x²yr2², 27x³y²z, dan 45xyz³ 24p²q²r, 32pq²s, dan 72q³r²s³

6ab=2.3.a.b
12b=2.2.3.b
KPK=2².3.a.b
=12ab
FPB=2.3.b
=6b
.
9ab=3.3.a.b
12bc=2.2.3.b.c
KPK=2².3²a.b.c
=36abc
FPB=3b
.
18x²yr²=2.3.3.x².y.r²
27x³y²z=3.3.3.x³.y².z
45xyz³=3.3.5.x.y.z³
KPK=2.3³.5.r².x³.y².z³
=270r²x³y²z³
FPB=3².x.y
=9xy
.
24p²q²r=2.2.2.3.p².q².r
32pq²s=2.2.2.2.2.p.q².s
72q³r²s³=2.2.2.3.3.q³.r².s³
KPK=2.2.2.2.2.3.3.p².q³.r².s³
=288p²q³r²s³
FPB=2³.3.q²
=24q²
.
. thanks for the question