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If a is a positive integer and x ≠ 0, which of the following expressions are equivalent to the expression $$x^{-3a}$$?
Indicate all such expressions.
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A.$$ -3x^{a}$$
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B.$$-ax^{3}$$
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C.$$\frac{1}{x^{3a}}$$
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D.$$\frac{a}{x^{3}}$$
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E.$$(\frac{1}{x^{a}})^{3}$$
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F.$$\frac{3}{ax}$$
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G.$$\frac{1}{(x^{a})^{3}}$$
C,E,G显示答案
