Answer
$$\frac{x^3}{8}$$
Work Step by Step
To simplify the exponents, we use the power rule to rewrite the exponents:
$$2^3x^{(-1)(-3)}$$
Simplify:
$$2^{-3}x^{3}$$
Move the constant to the denominator to get rid of negative exponent:
$$\frac{x^3}{2^3}$$
Simplify the constant term:
$$\frac{x^3}{8}$$