Question

find x, if ...............​

Answer 1

Answer:

x = -4

Step-by-step explanation:

$(-9^{4})^{-3} = (-9)^{3x}$

       $(a^{m}) ^{n} = a^{mn}$, so:

$-9^{-12} = (-9)^{3x}$

       If bases are same we can equate the powers, so:

3x = -12

x = -12/3

x = -4