Question

resolva as equações logarítmicas:
a) log2(x+4) = 1


b) log7(2x-8) = log7(x-2)

Answer 1

a) x+4 = 2

x = 2-4 

x = -2

b) 2x-8 = x-2

2x-x = -2+8
x = 6