A.a*(b+c)=a*b+a*c
B.a*(b-c)=a*b-a*c
C.fff\(\frac{b+c}{a}=\frac{b}{a}+\frac{c}{a}\)/fff
D.fff\(\frac{b-c}{a}=\frac{b}{a}-\frac{c}{a}\)/fff
E.fff\(\frac{a}{b+c}=\frac{b}{a}-\frac{a}{c}\)/fff
F.fff\(\frac{a}{b-c}=\frac{b}{a}-\frac{a}{c}\)/fff
G.fff\((b+c)^a=b^a+c^a\)/fff
H.fff\((b-c)^a=b^a-c^a\)/fff
我的答案: