tolong bantu soal carilah FPB DAN KPK

a) 24a²b = 2³ × 3 × a² × b
20ab³ = 2² × 5 × a × b³
FPB = 2² × a × b
= 4ab
KPK = 2³ × 3 × 5 × a² × b³
= 120a²b³

b) 10xy³ = 2 × 5 × x × y³
15x³y²z = 3 × 5 × x³ × y² × z
FPB = 5 × x × y²
= 5xy²
KPK = 2 × 3 × 5 × x³ × y³ × z
= 30x³y³z