Question

plz solve this urgent

Answer 1

(-5)^m+1×(-5)^6=(-1)^9 (5)^9
if basses are same add the powers

(-5)^m+7=(-1)^9 (5)^9

-1 power odd is equal to -1
(-5)^m+7 = (-5)^9
m+7=9
m=9-7
m=2