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If a, b, and c are real numbers, and a ≠ 0, which of the following must be true?
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A.a*(b+c)=a*b+a*c
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B.a*(b-c)=a*b-a*c
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C.$$\frac{b+c}{a}=\frac{b}{a}+\frac{c}{a}$$
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D.$$\frac{b-c}{a}=\frac{b}{a}-\frac{c}{a}$$
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E.$$\frac{a}{b+c}=\frac{b}{a}-\frac{a}{c}$$
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F.$$\frac{a}{b-c}=\frac{b}{a}-\frac{a}{c}$$
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G.$$(b+c)^a=b^a+c^a$$
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H.$$(b-c)^a=b^a-c^a$$
A,B,C,D显示答案
