Which expression is not equivalent to 4^3/4^6 ?(1 point) Responses 1/4^2 the fraction with numerator 1 and denominator 4 squared 1/4^3 the fraction with numerator 1 and denominator 4 cubed 4/−3^4 to the negative 3 power 1/6^4 1 over 64

4/−3^4 to the negative 3 power