Question 71595
log base 4 x+log base 4 (x-3)=1

log (base 4) x(x-3) = 1
x(x-3)=4
x^2-3x-4=0
(x-4)(x+1)=0
x=4 or x=-1
Only x=4 is an answer; x=-1 is extraneous
Cheers,
Stan H.