Question

What is the missing exponent? (12^-5)^2 / 12^-4 = 12^_____

Answer 1

$\frac{(12^{-5})^2}{12^{-4}}=\frac{12^{-5\times2}}{12^{-4}}=\frac{12^{-10}}{12^{-4}}=12^{-10-(-4)}=12^{-10+4}=12^{-6}\\\\Answer:\boxed{-6}$