Question 443873
The rule for negative exponents is:
{{{ a^(-b) = 1 /( a^b) }}}
You are given:
{{{ (4x)^(-3) = 1 / (4x)^3 }}}
{{{ 1 / (4x)^3 = 1 /( 4^3 * x^3) }}}
{{{ 1 /( 4^3 * x^3) = 1/(64x^3) }}}