Question

resolva as equações exponenciais a)2^x-1 = 4^2x+3;
b)3^3x-1=(1/3)^x+2;
c)49^x = 243^-1;
d)5^x+4=125^-x+7;
e)8^2x=32^x+3;

Answer 1

a)x-1 = 2(2x+3)
x-1 = 4x +6
x - 4x = 6 +1
-3x = 7
x = 7/-3