Question

(-5)^-3*(-5)^-4 = ??
Please solve this the first aswerer will be marked as the brainliest

Answer 1

Answer:

$(-5)^{-7}= -\frac{1}{5^{7} }$

Step-by-step explanation:

$(-5)^{-3}* (-5)^{-4}\\Using \ a^m*a^n = a^{m+n}$

$(-5)^{-3-4}$

$(-5)^{-7}= -\frac{1}{5^{7} }$