Answer :
a(b+c)=ab+ac
a is the GCF or any factor
so
factor each
18=2*3*3
20=2*2*5
GCF=2
2(9)+2(10)=2(9+10)=2(19)=38
a is the GCF or any factor
so
factor each
18=2*3*3
20=2*2*5
GCF=2
2(9)+2(10)=2(9+10)=2(19)=38