Jawab:

1. 42a dan 56ab

42a = 2.3.7.a

56ab = 2.2.2.2.7.a.b

KPK = 2.2.2.2.3.7.a.b = 168ab

FPB = 2.7.a = 14a

2. 24p²q dan 36p³q²

24p²q = 2.2.2.3.p.p.q

36p³q² = 2.2.3.3.p.p.p.q.q

KPK = 2.2.2.3.3.p.p.p.q.q = 72p3q2

3. 96m² dan 64mn³

96m² = 2.2.2.2.2.3.m.m

64mn³ = 2.2.2.2.2.2.m.n.n.n

KPK = 2.2.2.2.2.2.3.m.m.n.n.n = 192m2n3

FPB = 2.2.2.2.2.m = 32m

4. 18a²b⁵c⁴, 25a⁴b³c². dan 30ab³c⁵

18a²b⁵c⁴ = 2.3.3.a.a.b.b.b.b.b.c.c.c.c

25a⁴b³c² = 5.5.a.a.a.a.a.b.b.b.c.c

30ab³c⁵ = 2.3.5.a.b.b.b.c.c.c.c.c

KPK = 2.3.3.5.5.a.a.a.a.a.b.b.b.b.b.c.c.c.c.c = 150a5b5c5

FPB = a.b.b.b.c.c = ab3c2

5. 18a⁴b³, 54a³b⁵ dan 72a²b²​

18a⁴b³ = 2.3.3.a.a.a.a.b.b.b

54a³b⁵ = 2.3.3.3.a.a.a.b.b.b.b.b

72a²b²​ = 2.2.2.3.3.a.a.b.b

KPK = 2.2.2.3.3.3.a.a.a.a.b.b.b.b.b = 216a4b5

FPB = 2.3.3.a.a.b.b = 18a2b2