Flashbuilder "to the power of N"

How can I have the ^-N in the sta开发者_开发知识库tement below mean "to the power of -N" in Flashbuilder? Thanks

var M:Number =  1 - (1 + J)^-N;

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var M:Number = 1 - Math.pow(1 + J, -N);

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Colin is correct, use the Math.pow(val1:Number, val2:Number):Number method.

http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/Math.html#pow()