Question

Which of the following is a solution to log 4 x + log 4 (x-3) = 1?

A) x=6/5
B) x=2
C) x=-3
D) x=4

Answer 1

log4 x(x-3) = 1
x(x-3) = 4^1
x^2 - 3x - 4 = 0
x = 4 or- 1

x = 4 is correct