Question

Pls help me by answering this question. Pls tell me the answer fast... ​

Answer 1

Answer:

(-3)^n+1×(9)^2 = (-3)^9

(-3)^n+1×(3)^4=(-3)^9

n+1×81= -19683

n+1= -19683÷81

n+1=-243

n= -243-1

n= -244