1)log(0,5)(4x-1)-log(0,5)(7x-3)=1
ОДЗ
4x-1⇒x>0,25
7x-3>0⇒x>3/7
x∈(3/7;∞)
log(0,5)[(4x-1)/(7x-3)]=1
(4x-1)/(7x-3)=1/2
8x-2-7x+3=0
x=-1∉ОДЗ
решения нет
2)log(0,4)(x+2)+log(0,4)(x+3)=log(0,4)(1-x)
ОДЗ
x+2>0⇒x>-2
x+3>0⇒x>-3
1-x>0⇒x<1<br>x∈(-2;1)
log(0,4)[(x+2)(x+3)]=log(0,4)(1-x)
(x+2)(x+3)=1-x
x²+5x+6-1+x=0
x²+6x+5=0
x1+x2=-6 U x1*x2=5
x1=-5∉ОДЗ
х2=-1