Question

What is the missin1" title="(6 _(_? _) ) _{-4} = 6_2_0" alt="(6 _(_? _) ) _{-4} = 6_2_0" align="absmiddle" class="latex-formula">g exponent

Answer 1

$\left(6^{a}\right)^{-4}=6^{20}\\\\6^{-4a}=6^{20}\\\\-4a=20\\\\a=\dfrac{20}{-4}=-5$

The missing exponent is -5.