Question

Resolva as equações: a) 9^2x-1=1 b) 6.7^x-3=294 c) 3^1+x=324-3^X d) 2^x +2^x-1= 36

Answer 1

a)  9^2x-1=1
     9^2x-1=9^0
     2x-1=0
      2x=1
       x=1/2